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David Ben-Gurion born David Grün; 16 October 1886 – 1 December 1973) was the primary national founder of the State of Israel as well as the state's first prime minister. Born in Płońsk, then part of Congress Poland, to Polish Jewish parents, he immigrated to the Palestine region of the Ottoman Empire in 1906. Adopting the name of Ben-Gurion in 1909, he rose to become the preeminent leader of the Jewish community in British-ruled Mandatory Palestine from 1935 until the establishment of the State of Israel in 1948, which he led until 1963 with a short break in 1954–55.
Ben-Gurion's interest for Zionism developed early in his life, leading him to become a major Zionist leader and executive head of the World Zionist Organization in 1946. As head of the Jewish Agency from 1935, and later president of the Jewish Agency Executive, he was the de facto leader of the Jewish community in Palestine, and largely led the movement for an independent Jewish state in Mandatory Palestine.
On 14 May 1948, he formally proclaimed the establishment of Israel, and was the first to sign the Israeli Declaration of Independence, which he had helped to write. Under Ben-Gurion's leadership, the 1948 Arab–Israeli War saw the uniting of the various Jewish militias into the Israel Defense Forces (IDF), and the expulsion and flight of a majority of the Palestinian Arab population. Subsequently, he became known as "Israel's founding father". Following the war, Ben-Gurion served as Israel's first prime minister and minister of defence. As prime minister, he helped build state institutions, presiding over national projects aimed at the development of the country. He also oversaw the absorption of Jewish immigrants. A major part of his foreign policy was improving relations with West Germany through a reparations agreement in compensation for Nazi confiscation of Jewish property during the Holocaust.
In 1954, he resigned as prime minister and minister of defence but remained a member of the Knesset. He returned as minister of defence in 1955 after the Lavon Affair and the resignation of Pinhas Lavon. Later that year he became prime minister again, following the 1955 elections. He led Israel's reprisal operations to Arab guerrilla attacks, and its invasion of Egypt along with Britain and France during the Suez Crisis in 1956. He stepped down from office in 1963, and retired from political life in 1970. He then moved to his modest "hut" in Sde Boker, a kibbutz in the Negev desert, where he lived until his death. Posthumously, Ben-Gurion was named one of Time magazine's 100 Most Important People of the 20th century.
Early life
David Ben-Gurion was born in Płońsk in Congress Poland—then part of the Russian Empire, to Polish Jewish parents. His father, Avigdor Grün, was a pokątny doradca (secret adviser), navigating his clients through the often corrupt Imperial legal system. Following the publication of Theodore Herzl's Der Judenstaat in 1896 Avigdor co-founded a Zionist group called Beni Zion—Children of Zion. In 1900 it had a membership of 200. David was the youngest of three boys with an older and younger sister. His mother, Scheindel (Broitman), died of sepsis following a stillbirth in 1897. It was her eleventh pregnancy. Two years later his father remarried Ben-Gurion's birth certificate, found in Poland in 2003, indicated that he had a twin brother who died shortly after birth Between the ages of five and 13 Ben-Gurion attended five different heders as well as compulsory Russian classes. Two of the heders were 'modern' and taught in Hebrew rather than Yiddish. His father could not afford to enroll Ben-Gurion in Płońsk's beth midrash so Ben-Gurion's formal education ended after his bar mitzvah. At the age of 14 he and two friends formed a youth club, Ezra, promoting Hebrew studies and emigration to the Holy Land. The group ran Hebrew classes for local youth and in 1903 collected funds for the victims of the Kishinev pogrom. One biographer writes that Ezra had 150 members within a year. A different source estimates the group never had more than "several dozen" members.
In 1904 Ben-Gurion moved to Warsaw where he hoped to enroll in the Warsaw Mechanical-Technical School founded by Hipolit Wawelberg. He did not have sufficient qualifications to matriculate and took work teaching Hebrew in a Warsaw heder. Inspired by Tolstoy he had become a vegetarian.[11] He became involved in Zionist politics and in October 1905 he joined the clandestine Social-Democratic Jewish Workers' Party—Poalei Zion. Two months later he was the delegate from Płońsk at a local conference. While in Warsaw the Russian Revolution of 1905 broke out and he was in the city during the clamp down that followed; he was arrested twice, the second time he was held for two weeks and only released with the help of his father. In December 1905 he returned to Płońsk as a full-time Poalei Zion operative. There he worked to oppose the anti-Zionist Bund who were trying to establish a base. He also organised a strike over working conditions amongst garment workers. He was known to use intimidatory tactics, such as extorting money from wealthy Jews at gunpoint to raise funds for Jewish workers.
Ben-Gurion discussed his hometown in his memoirs, saying:
For many of us, anti-Semitic feeling had little to do with our dedication [to Zionism]. I personally never suffered anti-Semitic persecution. Płońsk was remarkably free of it ... Nevertheless, and I think this very significant, it was Płońsk that sent the highest proportion of Jews to Eretz Israel from any town in Poland of comparable size. We emigrated not for negative reasons of escape but for the positive purpose of rebuilding a homeland ... Life in Płońsk was peaceful enough. There were three main communities: Russians, Jews and Poles. ... The number of Jews and Poles in the city were roughly equal, about five thousand each. The Jews, however, formed a compact, centralized group occupying the innermost districts whilst the Poles were more scattered, living in outlying areas and shading off into the peasantry. Consequently, when a gang of Jewish boys met a Polish gang the latter would almost inevitably represent a single suburb and thus be poorer in fighting potential than the Jews who even if their numbers were initially fewer could quickly call on reinforcements from the entire quarter. Far from being afraid of them, they were rather afraid of us. In general, however, relations were amicable, though distant.
In autumn of 1906 he left Poland to go to Palestine. He travelled with his sweetheart Rachel Nelkin and her mother, as well as Shlomo Zemach his comrade from Ezra. His voyage was funded by his father.
Ottoman Empire and Constantinople
Immediately on landing in Jaffa, 7 September 1906, Ben-Gurion set off, on foot, in a group of 14, to Petah Tikva. It was the largest of the 13 Jewish agricultural settlements and consisted of 80 households with a population of nearly 1,500; of these around 200 were Second Aliyah pioneers like Ben-Gurion. He found work as a day labourer, waiting each morning hoping to be chosen by an overseer. Jewish workers found it difficult competing with local villagers who were more skilled and prepared to work for less. Ben-Gurion was shocked at the number of Arabs employed. In November he caught malaria and the doctor advised he return to Europe. By the time he left Petah Tikva in summer of 1907 he had worked an average 10 days a month which frequently left him with no money for food. He wrote long letters in Hebrew to his father and friends. They rarely revealed how difficult life was. Others who had come from Płońsk were writing about tuberculosis, cholera and people dying of hunger.
On his disembarkation at Jaffa, Ben-Gurion had been spotted by Israel Shochat who had arrived two years previously and had established a group of around 25 Poale Zion followers. Shochat made a point of inspecting new arrivals looking for recruits. A month after his arrival at Petah Tikva, Shochat invited Ben-Gurion to attend the founding conference of the Jewish Social Democratic Workers' Party in the Land of Israel in Jaffa. The conference, 4–6 October 1906, was attended by 60 or so people. Shochat engineered the elections so that Ben-Gurion was elected onto the five-man Central Committee and the 10-man Manifesto Committee. He also arranged that Ben-Gurion was chosen as chairman of the sessions. These Ben-Gurion conducted in Hebrew, forbidding the translation of his address into Russian or Yiddish. The conference was divided: a large faction—Rostovians—wanted to create a single Arab–Jewish proletariat. This Shochat and Ben-Gurion opposed. The conference delegated the Manifesto Committee the task of deciding the new party's objectives. They produced The Ramleh Program which was approved by a second smaller 15-man conference held in Jaffa the following January 1907. The program stated "the party aspires to political independence of the Jewish People in this country." All activities were to be conducted in Hebrew; there should be segregation of the Jewish and the Arab economies; and a Jewish trade union was to be established. Three members of the Central Committee resigned and Ben-Gurion and Shochat continued meeting weekly in Jaffa or Ben Shemen where Shochat was working. Ben-Gurion walked to the meetings from Petah Tikva until he moved to Jaffa where he gave occasional Hebrew lessons. His political activity resulted in the establishment of three small trade unions amongst some tailors, carpenters and shoemakers. He set up the Jaffa Professional Trade Union Alliance with 75 members. He and Shochat also brokered a settlement to a strike at the Rishon Le Zion winery where six workers had been sacked. After three months the two-man Central Committee was dissolved, partly because, at that time, Ben-Gurion was less militant than Shochat and the Rostovians. Ben-Gurion returned to Petah Tikva.
During this time Ben-Gurion sent a letter to Yiddish Kemfer ("The Jewish Fighter"), a Yiddish newspaper in New York City. It was an appeal for funds and was the first time something written by Ben-Gurion was published.
The arrival of Yitzhak Ben-Zvi in April 1907 revitalised the local Poale Zion. Eighty followers attended a conference in May at which Ben-Zvi was elected onto a two-man Central Committee and all Ben-Gurion's policies were reversed: Yiddish, not Hebrew, was the language to be used; the future lay with a united Jewish and Arab proletariat. Further disappointment came when Ben-Zvi and Shochat were elected as representatives to go to the World Zionist Congress. Ben-Gurion came last of five candidates. He was not aware that at the next gathering, on Ben-Zvi's return, a secret para-military group was set up—Bar-Giora—under Shochat's leadership. Distancing himself from Poale Zion activism Ben-Gurion, who had been a day-labourer at Kfar Saba, moved to Rishon Lezion where he remained for two months. He made detailed plans with which he tried to entice his father to come and be a farmer.
In October 1907, on Shlomo Zemach's suggestion, Ben-Gurion moved to Sejera. An agricultural training farm had been established at Sejera in the 1880s and since then a number of family-owned farms, moshavah, had been established forming a community of around 200 Jews. It was one of the most remote colonies in the foothills of north-eastern Galilee. It took the two young men three days to walk there.Coincidentally at the same time Bar Giora, now with about 20 members and calling themselves 'the collective' but still led by Shochat, took on the operating of the training farm. Ben-Gurion found work in the farm but, excluded from 'the collective', he later became a labourer for one of the moshav families. One of the first acts of 'the collective' was organising sacking of the farm's Circassian nightwatchman. As a result, shots were fired at the farms every night for several months. Guns were brought and the workforce armed. Ben-Gurion took turns patrolling the farm at night.
In the autumn of 1908 Ben-Gurion returned to Plonsk to be conscripted into the army and avoid his father facing a heavy fine. He immediately deserted and returned to Sejera, travelling, via Germany, with forged papers.
On 12 April 1909 two Jews from Sejera were killed in clashes with local Arabs following the death of a villager from Kfar Kanna, shot in an attempted robbery. There is little conformation of Ben-Gurion's accounts of his part in this event.
Later that summer, Ben-Gurion moved to Zichron Yaakov. From where the following spring he was invited, by Ben-Zvi, to join the staff of Poale Zion's new Hebrew periodical, Ha'ahdut (The Unity), which was being established in Jerusalem. They needed his fluency in Hebrew for translating and proof reading. It was the end of his career as a farm labourer. The first three editions came out monthly with an initial run of 1000 copies. It then became a weekly with a print run of 450 copies. He contributed 15 articles over the first year, using various pen names, eventually settling for Ben Gurion. The adopting of Hebrew names was common amongst those who remained during the Second Aliyah. He chose Ben-Gurion after the historic Joseph ben Gurion.
In the spring of 1911, faced with the collapse of the Second Aliyah, Poale Zion's leadership decided the future lay in "Ottomanisation". Ben-Zvi, Manya and Israel Shochat announced their intention to move to Istanbul. Ben-Zvi and Shochat planned to study law; Ben-Gurion was to join them but first needed to learn Turkish, spending eight months in Salonika, at that time the most advanced Jewish community in the area. Whilst studying he had to conceal that he was Ashkenazi due to local Sephardic prejudices. Ben-Zvi obtained a forged secondary school certificate so Ben-Gurion could join him in Istanbul University. Ben-Gurion was entirely dependent on funding from his father, while Ben-Zvi found work teaching. Struggling with ill health, Ben-Gurion spent some time in hospital.
Ben-Gurion in America, 1915–1918
Ben-Gurion was at sea, returning from Istanbul, when the First World War broke out. He was not amongst the thousands of foreign nationals deported in December 1914. Based in Jerusalem he and Ben-Zvi recruited forty Jews into a Jewish militia to assist the Ottoman Army. Despite his pro-Ottoman declarations he was deported to Egypt in March 1915. From there he made his way to the United States, arriving in May. For the next four months Ben-Gurion and Ben Zvi embarked on a speaking tour planned to visit Poale Zion groups in 35 cities in an attempt to raise a pioneer army, Hechalutz, of 10,000 men to fight on the Ottoman side. The tour was a disappointment. Audiences were small; Poale Zion had fewer than 3,000 members, mostly in the New York area. Ben-Gurion was hospitalised with diphtheria for two weeks and spoke on only five occasions and was poorly received. Ben-Zvi spoke to 14 groups as well as an event in New York City and succeeded in recruiting 44 volunteers for Hechalutz; Ben-Gurion recruited 19. Ben-Gurion embarked on a second tour in December, speaking at 19 meetings, mostly in small towns with larger events in Minneapolis and Galveston. Due to the lack of awareness of Poale Zion's activities in Palestine it was decided to republish Yizkor in Yiddish. The Hebrew original was published in Jaffa in 1911; it consisted of eulogies to Zionist martyrs and included an account by Ben-Gurion of his Petah Tikva and Sejera experiences. The first edition appeared in February 1916 and was an immediate success; all 3,500 copies were sold. A second edition of 16,000 was published in August. Martin Buber wrote the introduction to the 1918 German edition. The follow-up was conceived as an anthology of work from Poale Zion leaders; in fact Ben-Gurion took over as editor, writing the introduction and two-thirds of the text. He suspended all his Poale Zion activities and spent most of the next 18 months in New York Public Library. Ben-Zvi, originally designated as co-editor, contributed a section on Jewish history in which he expounded the theory that the fellahin currently living in the area were descendants of pre-Roman conquest Jews. Eretz Israel – Past and Present was published in April 1918. It cost $2 and was 500 pages long, over twice the length of Yizkor. It was an immediate success, selling 7,000 copies in 4 months; second and third editions were printed. Total sales of 25,000 copies made a profit of $20,000 for Poale Zion. It made Ben-Gurion the most prominent Poale Zion leader in America.
In May 1918 Ben-Gurion joined the newly formed Jewish Legion of the British Army and trained at Fort Edward in Windsor, Nova Scotia. He volunteered for the 38th Battalion, Royal Fusiliers, one of the four which constituted the Jewish Legion. His unit fought against the Ottomans as part of Chaytor's Force during the Palestine Campaign, though he remained in a Cairo hospital with dysentery. In 1918, after a period of guarding prisoners of war in the Egyptian desert, his battalion was transferred to Sarafand. On 13 December 1918 he was demoted from corporal to private, fined three days' pay and transferred to the lowest company in the battalion. He had been five days absent without leave visiting friends in Jaffa. He was demobilised in early 1919.
Marriage and family
One of Ben-Gurion's companions when he made the Aliyah was Rachel Nelkin. Her step-father, Reb Simcha Isaac, was the leading Zionist in Płońsk, and they had met three years previously at one of his meetings. It was expected that their relationship would continue when they landed in Jaffa but he shut her out after she was fired on her first day labouring—manuring the citrus groves of Petah Tikva.
Whilst in New York City in 1915, he met Russian-born Paula Munweis and they married in 1917. In November 1919, after an 18-month separation, Paula and their daughter Geula joined Ben-Gurion in Jaffa. It was the first time he met his one-year-old daughter. The couple had three children: a son, Amos, and two daughters, Geula Ben-Eliezer and Renana Leshem. Amos married Mary Callow, already pregnant with their first child. She was an Irish gentile, and although Reform rabbi Joachim Prinz converted her to Judaism soon after, neither the Palestine rabbinate nor her mother-in-law Paula Ben-Gurion considered her a real Jew until she underwent an Orthodox conversion many years later Amos became Deputy Inspector-General of the Israel Police, and also the director-general of a textile factory. He and Mary had six granddaughters from their two daughters and a son, Alon, who married a Greek gentile. Geula had two sons and a daughter, and Renana, who worked as a microbiologist at the Israel Institute for Biological Research, had a son.
Zionist leadership between 1919 and 1948
After the death of theorist Ber Borochov, the left-wing and centrist factions of Poalei Zion split in February 1919, with Ben-Gurion and his friend Berl Katznelson leading the centrist faction of the Labor Zionist movement. The moderate Poalei Zion formed Ahdut HaAvoda with Ben-Gurion as leader in March 1919.
In 1920 he assisted in the formation of the Histadrut, the Zionist Labor Federation in Palestine, and served as its general secretary from 1921 until 1935. At Ahdut HaAvoda's 3rd Congress, held in 1924 at Ein Harod, Shlomo Kaplansky, a veteran leader from Poalei Zion, proposed that the party should support the British Mandatory authorities' plans for setting up an elected legislative council in Palestine. He argued that a Parliament, even with an Arab majority, was the way forward. Ben-Gurion, already emerging as the leader of the Yishuv, succeeded in getting Kaplansky's ideas rejected.
In 1930, Hapoel Hatzair (founded by A. D. Gordon in 1905) and Ahdut HaAvoda joined forces to create Mapai, the more moderate Zionist labour party (it was still a left-wing organisation, but not as far-left as other factions) under Ben-Gurion's leadership. In the 1940s the left-wing of Mapai broke away to form Mapam. Labor Zionism became the dominant tendency in the World Zionist Organization and in 1935 Ben-Gurion became chairman of the executive committee of the Jewish Agency, a role he kept until the creation of the state of Israel in 1948.
During the 1936–1939 Arab revolt in Palestine, Ben-Gurion instigated a policy of restraint ("Havlagah") in which the Haganah and other Jewish groups did not retaliate for Arab attacks against Jewish civilians, concentrating only on self-defense. In 1937, the Peel Commission recommended partitioning Palestine into Jewish and Arab areas and Ben-Gurion supported this policy. This led to conflict with Ze'ev Jabotinsky who opposed partition and as a result Jabotinsky's supporters split with the Haganah and abandoned Havlagah.
The house where he lived from 1931 on, and for part of each year after 1953, is now a historic house museum in Tel Aviv, the "Ben-Gurion House". He also lived in London for some months in 1941.
In 1946, Ben-Gurion and North Vietnam's Politburo chairman Ho Chi Minh became very friendly when they stayed at the same hotel in Paris. Ho Chi Minh offered Ben-Gurion a Jewish home-in-exile in Vietnam. Ben-Gurion declined, telling Ho Chi Minh: "I am certain we shall be able to establish a Jewish Government in Palestine."
Views and opinions
According to his biographer Tom Segev, Ben-Gurion deeply admired Lenin and intended to be a 'Zionist Lenin'. In Ben-Gurion: A Political Life by Shimon Peres and David Landau, Peres recalls his first meeting with Ben-Gurion as a young activist in the No'ar Ha'Oved youth movement. Ben-Gurion gave him a lift, and out of the blue told him why he preferred Lenin to Trotsky: "Lenin was Trotsky's inferior in terms of intellect", but Lenin, unlike Trotsky, "was decisive". When confronted with a dilemma, Trotsky would do what Ben-Gurion despised about the old-style diaspora Jews: he manoeuvred; as opposed to Lenin, who would cut the Gordian knot, accepting losses while focusing on the essentials. In Peres' opinion, the essence of Ben-Gurion's life work were "the decisions he made at critical junctures in Israel's history", and none was as important as the acceptance of the 1947 partition plan, a painful compromise which gave the emerging Jewish state little more than a fighting chance, but which, according to Peres, enabled the establishment of the State of Israel.
1937 letter
The 1937 Ben-Gurion letter was written when he was head of the executive committee of the Jewish Agency, to his son Amos on 5 October 1937. The letter is well known to scholars as it provides insight into Ben-Gurion's reaction to the report of the Peel Commission released on 7 July of the same year. It has also been subject to significant debate by scholars as a result of scribbled-out text that may or may not provide written evidence of an intention to "expel the Arabs" or "not expel the Arabs" depending on one's interpretation of whether such deletion was intended by Ben-Gurion.
Role in 1948 exodus of Palestinians
Israeli historian Benny Morris wrote that the idea of expulsion of Palestinian Arabs was endorsed in practice by mainstream Zionist leaders, particularly Ben-Gurion. He did not give clear or written orders in that regard, but Morris claims that Ben-Gurion's subordinates understood his policy well:
From April 1948, Ben-Gurion is projecting a message of transfer. There is no explicit order of his in writing, there is no orderly comprehensive policy, but there is an atmosphere of [population] transfer. The transfer idea is in the air. The entire leadership understands that this is the idea. The officer corps understands what is required of them. Under Ben-Gurion, a consensus of transfer is created.
Attitude towards Arabs
Ben-Gurion published two volumes setting out his views on relations between Zionists and the Arab world: We and Our Neighbors, published in 1931, and My Talks with Arab Leaders published in 1967. Ben-Gurion believed in the equal rights of Arabs who remained in and would become citizens of Israel. He was quoted as saying, "We must start working in Jaffa. Jaffa must employ Arab workers. And there is a question of their wages. I believe that they should receive the same wage as a Jewish worker. An Arab has also the right to be elected president of the state, should he be elected by all."
Ben-Gurion recognised the strong attachment of Palestinian Arabs to the land. In an address to the United Nations on 2 October 1947, he doubted the likelihood of peace:
This is our native land; it is not as birds of passage that we return to it. But it is situated in an area engulfed by Arabic-speaking people, mainly followers of Islam. Now, if ever, we must do more than make peace with them; we must achieve collaboration and alliance on equal terms. Remember what Arab delegations from Palestine and its neighbors say in the General Assembly and in other places: talk of Arab-Jewish amity sound fantastic, for the Arabs do not wish it, they will not sit at the same table with us, they want to treat us as they do the Jews of Bagdad, Cairo, and Damascus.
Nahum Goldmann criticised Ben-Gurion for what he viewed as a confrontational approach to the Arab world. Goldmann wrote, "Ben-Gurion is the man principally responsible for the anti-Arab policy, because it was he who molded the thinking of generations of Israelis." Simha Flapan quoted Ben-Gurion as stating in 1938: "I believe in our power, in our power which will grow, and if it will grow agreement will come..."
Goldmann reported that Ben Gurion had told him in private in 1956:
Why should the Arabs make peace? If I was an Arab leader I would never make terms with Israel. That is natural: we have taken their country. Sure, God promised it to us, but what does that matter to them? Our God is not theirs. We come from Israel, it's true, but two thousand years ago, and what is that to them? There has been anti-Semitism, the Nazis, Hitler, Auschwitz, but was that their fault? They only see one thing: we have come here and stolen their country. Why should they accept that?
In 1909, Ben-Gurion attempted to learn Arabic but gave up. He later became fluent in Turkish. The only other languages he was able to use when in discussions with Arab leaders were English, and to a lesser extent, French.
Attitude towards the British
The British 1939 White paper stipulated that Jewish immigration to Palestine was to be limited to 15,000 a year for the first five years, and would subsequently be contingent on Arab consent. Restrictions were also placed on the rights of Jews to buy land from Arabs. After this Ben-Gurion changed his policy towards the British, stating: "Peace in Palestine is not the best situation for thwarting the policy of the White Paper". Ben-Gurion believed a peaceful solution with the Arabs had no chance and soon began preparing the Yishuv for war. According to Teveth "through his campaign to mobilize the Yishuv in support of the British war effort, he strove to build the nucleus of a 'Hebrew Army', and his success in this endeavor later brought victory to Zionism in the struggle to establish a Jewish state."
During the Second World War, Ben-Gurion encouraged the Jewish population to volunteer for the British Army. He famously told Jews to "support the British as if there is no White Paper and oppose the White Paper as if there is no war". About 10% of the Jewish population of Palestine volunteered for the British Armed Forces, including many women. At the same time Ben-Gurion assisted the illegal immigration of thousands of European Jewish refugees to Palestine during a period when the British placed heavy restrictions on Jewish immigration.
In 1944, the Irgun and Lehi, two Jewish right-wing armed groups, declared a rebellion against British rule and began attacking British administrative and police targets. Ben-Gurion and other mainstream Zionist leaders opposed armed action against the British, and after Lehi assassinated Lord Moyne, the British Minister of State in the Middle East, decided to stop it by force. While Lehi was convinced to suspend operations, the Irgun refused and as a result, the Haganah began supplying intelligence to the British enabling them to arrest Irgun members, and abducting and often torturing Irgun members, handing some over to the British while keeping others detained in secret Haganah prisons. This campaign, which was called the Saison or "Hunting Season", left the Irgun unable to continue operations as they struggled to survive. Irgun leader Menachem Begin ordered his fighters not to retaliate so as to prevent a civil war. The Saison became increasingly controversial in the Yishuv, including within the ranks of the Haganah, and it was aborted at the end of March 1945.
At the end of World War II, the Zionist leadership in Palestine had expected a British decision to establish a Jewish state. However, it became clear that the British had no intention of immediately establishing a Jewish state and that limits on Jewish immigration would remain for the time being. As a result, with Ben-Gurion's approval the Haganah entered into a secret alliance with the Irgun and Lehi called the Jewish Resistance Movement in October 1945 and participated in attacks against the British. In June 1946, the British launched Operation Agatha, a large police and military operation throughout Palestine, searching for arms and arresting Jewish leaders and Haganah members in order to stop the attacks and find documentary evidence of the alliance the British suspected existed between the Haganah, Irgun, and Lehi. The British had intended to detain Ben-Gurion during the operation but he was visiting Paris at the time. The British stored the documents they had captured from the Jewish Agency headquarters in the King David Hotel, which was being used as a military and administrative headquarters. Ben-Gurion agreed to the Irgun's plan to bomb the King David Hotel in order to destroy incriminating documents that Ben-Gurion feared would prove that the Haganah had been participating in the violent insurrection against the British in cooperation with the Irgun and Lehi with the approval of himself and other Jewish Agency officials. However, Ben-Gurion asked that the operation be delayed, but the Irgun refused. The Irgun carried out the King David Hotel bombing in July 1946, killing 91 people. Ben-Gurion publicly condemned the bombing. In the aftermath of the bombing, Ben-Gurion ordered that the Jewish Resistance Movement be dissolved. From then on, the Irgun and Lehi continued to regularly attack the British, but the Haganah rarely did so, and while Ben-Gurion along with other mainstream Zionist leaders publicly condemned the Irgun and Lehi attacks, in practice the Haganah under their direction rarely cooperated with the British in attempting to suppress the insurgency.
Due to the Jewish insurgency, bad publicity over the restriction of Jewish immigrants to Palestine, non-acceptance of a partitioned state (as suggested by the United Nations) amongst Arab leaders, and the cost of keeping 100,000 troops in Palestine the British Government referred the matter to the United Nations. In September 1947, the British decided to terminate the Mandate. In November 1947, the United Nations General Assembly passed a resolution approving the United Nations Partition Plan for Palestine. While the Jewish Agency under Ben-Gurion accepted, the Arabs rejected the plan and the 1947–1948 civil war in Mandatory Palestine broke out. Ben-Gurion's strategy was for the Haganah to hold on to every position with no retreat or surrender and then launch an offensive when British forces had evacuated to such an extent that there would be no more danger of British intervention. This strategy was successful, and by May 1948 Jewish forces were winning the civil war. On 14 May 1948, a few hours before the British Mandate officially terminated, Ben-Gurion declared Israeli independence in a ceremony in Tel Aviv. A few hours later, the State of Israel officially came into being when the British Mandate terminated on 15 May. The 1948 Arab–Israeli War began immediately afterwards as numerous Arab nations then invaded Israel.
Attitude towards conquering the West Bank
After the ten-day campaign during the 1948 war, the Israelis were militarily superior to their enemies and the Cabinet subsequently considered where and when to attack next. On 24 September, an incursion made by the Palestinian irregulars in the Latrun sector, killing 23 Israeli soldiers, precipitated the debate. On 26 September, Ben-Gurion put his argument to the Cabinet to attack Latrun again and conquer the whole or a large part of West Bank. The motion was rejected by a vote of seven to five after discussions. Ben-Gurion qualified the cabinet's decision as bechiya ledorot ("a source of lament for generations") considering Israel may have lost forever the Old City of Jerusalem.
There is a controversy around these events. According to Uri Bar-Joseph, Ben-Gurion placed a plan that called for a limited action aimed at the conquest of Latrun, and not for an all-out offensive. According to David Tal, in the cabinet meeting, Ben-Gurion reacted to what he had been just told by a delegation from Jerusalem. He points out that this view that Ben-Gurion had planned to conquer the West Bank is unsubstantiated in both Ben-Gurion's diary and in the Cabinet protocol.
The topic came back at the end of the 1948 war, when General Yigal Allon also proposed the conquest of the West Bank up to the Jordan River as the natural, defensible border of the state. This time, Ben-Gurion refused although he was aware that the IDF was militarily strong enough to carry out the conquest. He feared the reaction of Western powers and wanted to maintain good relations with the United States and not to provoke the British. Moreover, in his opinion the results of the war were already satisfactory and Israeli leaders had to focus on the building of a nation.
According to Benny Morris, "Ben-Gurion got cold feet during the war. ... If [he] had carried out a large expulsion and cleansed the whole country -the whole Land of Israel, as far as the Jordan River. It may yet turn out that this was his fatal mistake. If he had carried out a full expulsion rather than a partial one- he would have stabilized the State of Israel for generations."
Religious parties and status quo
In order to prevent the coalescence of the religious right, the Histadrut agreed to a vague status quo agreement with Mizrahi in 1935.
Ben-Gurion was aware that world Jewry could and would only feel comfortable to throw their support behind the nascent state if it was shrouded with religious mystique. That would include an orthodox tacit acquiescence to the entity. Therefore, in September 1947 Ben-Gurion decided to reach a formal status quo agreement with the Orthodox Agudat Yisrael party. He sent a letter to Agudat Yisrael stating that while being committed to establishing a non-theocratic state with freedom of religion, he promised that the Shabbat would be Israel's official day of rest, that in state-provided kitchens there would be access to kosher food, that every effort would be made to provide a single jurisdiction for Jewish family affairs, and that each sector would be granted autonomy in the sphere of education, provided minimum standards regarding the curriculum be observed. To a large extent this agreement provided the framework for religious affairs in Israel till the present day, and is often used as a benchmark regarding the arrangement of religious affairs in Israel.
Religious belief
Ben-Gurion described himself as an irreligious person who developed atheism in his youth and who demonstrated no great sympathy for the elements of traditional Judaism, though he quoted the Bible extensively in his speeches and writings. Modern Orthodox philosopher Yeshayahu Leibowitz considered Ben-Gurion "to have hated Judaism more than any other man he had met". He was proud of the fact that he had only set foot in a synagogue once in Israel, worked on Yom Kippur and ate pork. In later time, Ben-Gurion refused to define himself as "secular", and he regarded himself a believer in God. In a 1970 interview, he described himself as a pantheist, and stated that "I don't know if there's an afterlife. I think there is." During an interview with the leftist weekly Hotam two years before his death, he revealed, "I too have a deep faith in the Almighty. I believe in one God, the omnipotent Creator. My consciousness is aware of the existence of material and spirit ... [But) I cannot understand how order reigns in nature, in the world and universe—unless there exists a superior force. This supreme Creator is beyond my comprehension . . . but it directs everything."
In a letter to the writer Eliezer Steinman, he wrote "Today, more than ever, the 'religious' tend to relegate Judaism to observing dietary laws and preserving the Sabbath. This is considered religious reform. I prefer the Fifteenth Psalm, lovely are the psalms of Israel. The Shulchan Aruch is a product of our nation's life in the Exile. It was produced in the Exile, in conditions of Exile. A nation in the process of fulfilling its every task, physically and spiritually ... must compose a 'New Shulchan'—and our nation's intellectuals are required, in my opinion, to fulfill their responsibility in this."
Military leadership
During the 1948 Arab–Israeli War Ben-Gurion oversaw the nascent state's military operations. During the first weeks of Israel's independence, he ordered all militias to be replaced by one national army, the Israel Defense Forces (IDF). To that end, Ben-Gurion used a firm hand during the Altalena Affair, a ship carrying arms purchased by the Irgun led by Menachem Begin. He insisted that all weapons be handed over to the IDF. When fighting broke out on the Tel Aviv beach he ordered it be taken by force and to shell the ship. Sixteen Irgun fighters and three IDF soldiers were killed in this battle. Following the policy of a unified military force, he also ordered that the Palmach headquarters be disbanded and its units be integrated with the rest of the IDF, to the chagrin of many of its members. By absorbing the Irgun force into Israel's IDF, the Israelis eliminated competition and the central government controlled all military forces within the country. His attempts to reduce the number of Mapam members in the senior ranks led to the "Generals' Revolt" in June 1948.
As head of the Jewish Agency from 1935, Ben-Gurion was de facto leader of the Jewish population even before the state was declared. In this position, Ben-Gurion played a major role in the 1948 Arab–Israeli War. When the IDF archives and others were opened in the late 1980s, scholars started to reconsider the events and the role of Ben-Gurion.
Plan Dalet
Plan Dalet was a plan worked out by the Haganah in Mandatory Palestine in March 1948, requested by Ben Gurion, consisting of a set of guidelines to take control of Mandatory Palestine, declare a Jewish state, and defend its borders and people, including the Jewish population outside of the borders, "before, and in anticipation of" the invasion by regular Arab armies. According to the Israeli Yehoshafat Harkabi, Plan Dalet called for the conquest of Arab towns and villages inside and along the borders of the area allocated to the proposed Jewish State in the UN Partition Plan. In case of resistance, the population of conquered villages was to be expelled outside the borders of the Jewish state. If no resistance was met, the residents could stay put, under military rule.
The intent of Plan Dalet is subject to much controversy, with historians on one side asserting that it was entirely defensive[citation needed], while other historians assert that the plan aimed at the expulsion, sometimes called an ethnic cleansing[citation needed], on the grounds that this was an integral part of a planned strategy.
Founding of Israel
On 14 May 1948, on the last day of the British Mandate, Ben-Gurion declared the independence of the State of Israel. In the Israeli declaration of independence, he stated that the new nation would "uphold the full social and political equality of all its citizens, without distinction of religion, race".
In his War Diaries in February 1948, Ben-Gurion wrote: "The war shall give us the land. The concepts of 'ours' and 'not ours' are peace concepts only, and they lose their meaning during war." Also later he confirmed this by stating that, "In the Negev we shall not buy the land. We shall conquer it. You forget that we are at war." The Arabs, meanwhile, also vied with Israel over the control of territory by means of war, while the Jordanian Arab Legion had decided to concentrate its forces in Bethlehem and in Hebron in order to save that district for its Arab inhabitants, and to prevent territorial gains for Israel.[115] Israeli historian Benny Morris has written of the massacres of Palestinian Arabs in 1948, and has stated that Ben-Gurion "covered up for the officers who did the massacres."
First tenure as prime minister
After leading Israel during the 1948 Arab–Israeli War, Ben-Gurion was elected Prime Minister of Israel when his Mapai (Labour) party won the largest number of Knesset seats in the first national election, held on 14 February 1949. He remained in that post until 1963, except for a period of nearly two years between 1954 and 1955. As prime minister, he oversaw the establishment of the state's institutions. He presided over various national projects aimed at the rapid development of the country and its population: Operation Magic Carpet, the airlift of Jews from Arab countries, the construction of the National Water Carrier, rural development projects and the establishment of new towns and cities. In particular, he called for pioneering settlement in outlying areas, especially in the Negev. Ben-Gurion saw the struggle to make the Negev desert bloom as an area where the Jewish people could make a major contribution to humanity as a whole. He believed that the sparsely populated and barren Negev desert offered a great opportunity for the Jews to settle in Palestine with minimal obstruction of the Arab population,[dubious – discuss] and set a personal example by settling in kibbutz Sde Boker at the center of the Negev.
Reprisal operations
See also: Reprisal operations and Qibya massacre
During this period, Palestinian fedayeen repeatedly infiltrated into Israel from Arab territory. In 1953, after a handful of unsuccessful retaliatory actions, Ben-Gurion charged Ariel Sharon, then security chief of the northern region, with setting up a new commando unit designed to respond to fedayeen infiltrations. Ben-Gurion told Sharon, "The Palestinians must learn that they will pay a high price for Israeli lives." Sharon formed Unit 101, a small commando unit answerable directly to the IDF General Staff tasked with retaliating for fedayeen raids. During its five months of existence, the unit launched repeated raids against military targets and villages used as bases by the fedayeen. These attacks became known as the reprisal operations. One such operation gained international condemnation of Israel, after an Israeli army attack on the village of Qibya in the then Jordanian-ruled West Bank, ended with a massacre of 69 Palestinian villagers, two thirds of them women and children. Ben Gurion denied involvement of the army and placed blame on Israeli civilians, a fabrication which was repeated by him at the UN. He was seen as having protected involved subordinates in the military from accountability.
Acting prime minister
In 1953, Ben-Gurion announced his intention to withdraw from government and was replaced by Moshe Sharett, who was elected the second Prime Minister of Israel in January 1954. However, Ben-Gurion temporarily served as acting prime minister when Sharett visited the United States in 1955. During Ben-Gurion's tenure as acting prime minister, the IDF carried out Operation Olive Leaves, a successful attack on fortified Syrian emplacements near the northeastern shores of the Sea of Galilee. The operation was a response to Syrian attacks on Israeli fishermen. Ben-Gurion had ordered the operation without consulting the Israeli cabinet and seeking a vote on the matter, and Sharett would later bitterly complain that Ben-Gurion had exceeded his authority.
Second tenure as prime minister
Ben-Gurion returned to government in 1955. He assumed the post of defence minister and was soon re-elected prime minister. When he returned to government, Israeli forces began responding more aggressively to Egyptian-sponsored Palestinian guerrilla attacks from Gaza, which was under Egyptian rule. Egypt's President Gamal Abdel Nasser signed the Egyptian-Czech arms deal and purchased a large number of modern arms. The Israelis responded by arming themselves with help from France. Nasser blocked the passage of Israeli ships through the Straits of Tiran and the Suez Canal. In July 1956, the United States and Britain withdrew their offer to fund the Aswan High Dam project on the Nile and a week later, Nasser ordered the nationalisation of the French and British-controlled Suez Canal. In late 1956, the bellicosity of Arab statements prompted Israel to remove the threat of the concentrated Egyptian forces in the Sinai, and Israel invaded the Egyptian Sinai Peninsula. Other Israeli aims were elimination of the fedayeen incursions into Israel that made life unbearable for its southern population and opening the blockaded Straits of Tiran for Israeli ships. Israel occupied much of the peninsula within a few days. As agreed beforehand, within a couple of days, Britain and France invaded too, aiming at regaining Western control of the Suez Canal and removing the Egyptian president Nasser. The United States pressure forced the British and French to back down and Israel to withdraw from Sinai in return for free Israeli navigation through the Red Sea. The United Nations responded by establishing its first peacekeeping force, (UNEF). It was stationed between Egypt and Israel and for the next decade it maintained peace and stopped the fedayeen incursions into Israel.
In 1959, Ben-Gurion learned from West German officials of reports that the notorious Nazi war criminal, Adolf Eichmann, was likely living in hiding in Argentina. In response, Ben-Gurion ordered the Israel foreign intelligence service, the Mossad, to capture the international fugitive alive for trial in Israel. In 1960, the mission was accomplished, and Eichmann was tried and convicted in an internationally publicised trial for various offences including crimes against humanity and was subsequently executed in 1962.
Ben-Gurion is said to have been "nearly obsessed" with Israel's obtaining nuclear weapons, feeling that a nuclear arsenal was the only way to counter the Arabs' superiority in numbers, space, and financial resources, and that it was the only sure guarantee of Israel's survival and the prevention of another Holocaust. During his final months as premier Ben-Gurion was engaged in a, now declassified, diplomatic standoff with the United States.
Ben-Gurion stepped down as prime minister on 16 June 1963. According to historian Yechiam Weitz, when he unexpectedly resigned:
He was asked to reconsider his decision by the cabinet. The country, however, seemed to have anticipated his move and, unlike the response to his resignation in 1953, no serious efforts were made to dissuade him from resigning.... [His reasons include] his political isolation, suspicion of colleagues and rivals, apparent inability to interact with the full spectrum of reality, and belief that his life's work was disintegrating. His resignation was not an act of farewell but another act of his personal struggle and possibly an indication of his mental state.
Ben-Gurion chose Levi Eshkol as his successor. A year later a bitter rivalry developed between the two on the issue of the Lavon Affair, a failed 1954 Israeli covert operation in Egypt. Ben-Gurion had insisted that the operation be properly investigated, while Eshkol refused. After failing to unseat Eshkol as Mapai party leader in the 1965 Mapai leadership election, Ben-Gurion subsequently broke with Mapai in June 1965 and formed a new party, Rafi, while Mapai merged with Ahdut HaAvoda to form Alignment, with Eshkol as its head. Alignment defeated Rafi in the November 1965 election, establishing Eshkol as the country's leader.
Later political career
In May 1967, Egypt began massing forces in the Sinai Peninsula after expelling UN peacekeepers and closed the Straits of Tiran to Israeli shipping. This, together with the actions of other Arab states, caused Israel to begin preparing for war. The situation lasted until the outbreak of the Six-Day War on 5 June. In Jerusalem, there were calls for a national unity government or an emergency government. During this period, Ben-Gurion met with his old rival Menachem Begin in Sde Boker. Begin asked Ben-Gurion to join Eshkol's national unity government. Although Eshkol's Mapai party initially opposed the widening of its government, it eventually changed its mind. On 23 May, IDF Chief of Staff Yitzhak Rabin met with Ben-Gurion to ask for reassurance. Ben-Gurion, however, accused Rabin of putting Israel in mortal danger by mobilising the reserves and openly preparing for war with an Arab coalition. Ben-Gurion told Rabin that at the very least, he should have obtained the support of a foreign power, as he had done during the Suez Crisis. Rabin was shaken by the meeting and took to bed for 36 hours.
After the Israeli government decided to go to war, planning a preemptive strike to destroy the Egyptian Air Force followed by a ground offensive, Defense Minister Moshe Dayan told Ben-Gurion of the impending attack on the night of 4–5 June. Ben-Gurion subsequently wrote in his diary that he was troubled by Israel's impending offensive. On 5 June, the Six-Day War began with Operation Focus, an Israeli air attack that decimated the Egyptian air force. Israel then captured the Sinai Peninsula and Gaza Strip from Egypt, the West Bank, including East Jerusalem from Jordan, and the Golan Heights from Syria in a series of campaigns. Following the war, Ben-Gurion was in favour of returning all the captured territories apart from East Jerusalem, the Golan Heights and Mount Hebron as part of a peace agreement.
On 11 June, Ben-Gurion met with a small group of supporters in his home. During the meeting, Defense Minister Moshe Dayan proposed autonomy for the West Bank, the transfer of Gazan refugees to Jordan, and a united Jerusalem serving as Israel's capital. Ben-Gurion agreed with him but foresaw problems in transferring Palestinian refugees from Gaza to Jordan, and recommended that Israel insist on direct talks with Egypt, favouring withdrawal from the Sinai Peninsula in exchange for peace and free navigation through the Straits of Tiran. The following day, he met with Jerusalem mayor Teddy Kollek in his Knesset office. Despite occupying a lower executive position, Ben-Gurion treated Kollek like a subordinate.
Following the Six-Day War, Ben-Gurion criticised what he saw as the government's apathy towards the construction and development of the city. To ensure that a united Jerusalem remained in Israeli hands, he advocated a massive Jewish settlement program for the Old City and the hills surrounding the city, as well as the establishment of large industries in the Jerusalem area to attract Jewish migrants. He argued that no Arabs would have to be evicted in the process. Ben-Gurion also urged extensive Jewish settlement in Hebron.
In 1968, when Rafi merged with Mapai to form the Alignment, Ben-Gurion refused to reconcile with his old party. He favoured electoral reforms in which a constituency-based system would replace what he saw as a chaotic proportional representation method. He formed another new party, the National List, which won four seats in the 1969 election.
Final years and death
Ben-Gurion retired from politics in 1970 and spent his last years living in a modest home in kibbutz Sde Boker, working on an 11-volume history of Israel's early years. In 1971, he visited Israeli positions along the Suez Canal during the War of Attrition.
On 18 November 1973, shortly after the Yom Kippur War, Ben-Gurion suffered a cerebral haemorrhage, and was taken to Sheba Medical Center in Tel HaShomer, Ramat Gan. His condition began deteriorating on 23 November and he died a few days later, on 1 December. His body lay in state in the Knesset compound before being flown by helicopter to Sde Boker. Sirens sounded across the country to mark his death. He was buried alongside his wife Paula at Midreshet Ben-Gurion.
Awards
In 1949, Ben-Gurion was awarded the Solomon Bublick Award of the Hebrew University of Jerusalem, in recognition of his contributions to the State of Israel.
In both 1951 and 1971, he was awarded the Bialik Prize for Jewish thought.
Commemoration
Israel's largest airport, Ben Gurion International Airport, is named in his honour.
One of Israel's major universities, Ben-Gurion University of the Negev, located in Beersheva, is named after him.
Numerous streets, as well as schools, throughout Israel have been named after him.
An Israeli modification of the British Centurion Tank was named after Ben-Gurion
Ben-Gurion's Hut in Kibbutz Sde Boker which is now a visitors' center.
A desert research center, Midreshet Ben-Gurion, near his "hut" in Kibbutz Sde Boker has been named in his honour. Ben-Gurion's grave is in the research center.
An English Heritage blue plaque, unveiled in 1986, marks where Ben-Gurion lived in London at 75 Warrington Crescent, Maida Vale, W9.
In the 7th arrondissement of Paris, part of a riverside promenade of the Seine is named after him.
His portrait appears on both the 500 lirot and the 50 (old) sheqalim notes issued by the Bank of Israel.
The Act oISwalIowing Exodus 7: 12 tells us that Aaron's staff "swallowed" (Y?:l'1) those of the magiciansIn Egypt "swallowing" (sbb or C3m)was an act of great magical significance. Ritner remarks:Consumption entails the absorption of an object and the acquisition of its benefits or traits. Altern:uively, the act can serve a principally hostile function, whereby "devour" signifies "todestroy"-though even here the concept of acquiring power may be retaine:d.~b -For instance, we read in spell 612 of the Coffin Texts: "I have swallowed the seven uraei."27 Swallowing gods (like the uraeus) was proscribed by Egyptian magic as a potion for death.28The "Cannibal Hymn" in the Pyramid Text, spells 273-74, also state:The Kingis onewhoeatsmenandliveson the gods.,TheKingeatstheirmagic,swallowstheir spirits.29 See also Coffin Text, spell 1017: "I have eaten Maat, I have swallowed magic."3o In addition, in Egyptian magical parlance, c3m "to swallow," is "to know:'31 and "to know" someone is to have power over that person. For example, in the Book of the Heavenly Cow we find Ra's warning against the magicians who employ the magic in their bodies:Moreover, guard against those magicians who know (rb) their spells, since: the god Heka is in them himself. Now as for the one who ingests/knows (C3111)him. I am there.J~Therefore, when Aaron uses the "staff of God" (cf. Exod. 4:20), the symbol of his authority, to devour the staffs and authority of the magicians, the Egyptian magicians would have perceived this as an absorption of their power and knowledge. This explains why the text attributes the act of swallowing to Aaron's "staff" and 25. Cf. the curse for adultery in Num. 5:23-24 which involves the ingestion of a priestly text; noted by Ritner. Ancient Egyptian Magical Practice. 109. Interestingly. both Terence E. Fretheim, Exodus (Louisville,1991). 113: and Currid, "The Egyptian Setting of the 'Serpent'," 206. see the: word "swallow" as a linguitic connector to Exod. 14: 16, 14:26, in which the Reed Sea "swallows" the Egyptians.26. Ritner, Egyptian Magical Practice, 103.27. Ibid., 104.28. Ibid., 105.29. Ibid., 103.30. Ibid., 88.31. Ibid., 106. Cf. the English expression "hard to swallow" in the sense of "difficult to comprehend."32. Ibid., 106.50 JANES 24 (1996)not to Aaron's serpent, a textual peculiarity that clearly bothered the classical rabbisas well.33Perhaps it is with the Egyptian conception of "knowledge" in mind, therefore,that we shouldunderstand God's repeated words to Moses: "By this (demonstration of power) you shall know that I am Yahweh" (7: 17). More on this below.
The Space Shuttle program, operated by NASA from 1981 to 2011, was a groundbreaking human spaceflight program that utilized various components, including the Space Shuttle Orbiter, the Space Shuttle External Tank (ET), and the Solid Rocket Boosters (SRBs). In this response, we will focus on the Space Shuttle External Tank and Booster Rockets, discussing their design, purpose, and key aspects. Please note that the following information is based on the program up until 2000, as specified in your request.
Space Shuttle External Tank (ET):
The Space Shuttle External Tank played a crucial role in the Space Shuttle launch system. It was the largest component of the Space Shuttle stack and provided the primary propellant for the Orbiter's main engines. Here are some key points about the External Tank:
Design and Structure:
The External Tank had a cylindrical shape and consisted of three major components: the forward liquid oxygen (LOX) tank, the aft liquid hydrogen (LH2) tank, and a connecting intertank structure.
The LOX tank, located at the forward end, contained approximately 1.4 million liters (380,000 gallons) of liquid oxygen.
The LH2 tank, positioned at the aft end, held around 1.9 million liters (526,000 gallons) of liquid hydrogen.
The intertank structure connected the LOX and LH2 tanks and housed various components, including avionics, electrical wiring, and feedlines.
The tanks were constructed using lightweight materials, such as aluminum alloys, to reduce the overall weight of the External Tank.
Function:
The primary function of the External Tank was to supply propellant to the Space Shuttle's three main engines.
The LOX and LH2 stored in the External Tank were funneled through feedlines and supplied to the Orbiter's engines at an optimal mix ratio for combustion.
As the propellant was consumed, the tank's structure progressively lightened, reducing its mass and enabling more efficient ascent to orbit.
Unlike the Solid Rocket Boosters, the External Tank was not reusable and was jettisoned after its propellant was depleted.
Thermal Protection:
The External Tank experienced extreme temperature variations during launch and reentry, requiring robust thermal protection measures.
The LOX tank was covered with sprayed-on foam insulation to prevent excessive heat absorption from the environment and maintain the propellant's low temperature.
The LH2 tank, due to its extremely low temperature, did not require extensive insulation but instead relied on a combination of passive and active cooling techniques.
Solid Rocket Boosters (SRBs):
The Space Shuttle Solid Rocket Boosters were two large, reusable rocket motors attached to the sides of the External Tank. Here's some information about the SRBs:
Design and Structure:
Each Solid Rocket Booster was approximately 45 meters (149 feet) long and 3.7 meters (12.2 feet) in diameter.
The boosters were composed of several cylindrical segments, including the forward skirt, motor segments, aft skirt, and nozzle.
The motor segments contained solid propellant, which provided the necessary thrust during the Shuttle's initial ascent phase.
The nozzles at the aft end directed the exhaust gases generated by the propellant combustion.
Function:
The Solid Rocket Boosters were responsible for providing the majority of the thrust required for the Space Shuttle to break free from Earth's gravity.
They ignited prior to liftoff and remained active for approximately two minutes, during which they consumed their solid propellant.
The boosters worked in conjunction with the Orbiter's main engines to propel the entire Space Shuttle stack off the launch pad and into space.
Following burnout, the SRBs were jettisoned and subsequently recovered from the ocean, refurbished, and prepared for future missions.
Parachute Recovery:
After separation, the SRBs were equipped with parachutes to facilitate their controlled descent and landing in the ocean.
A combination of drogue chutes and main parachutes slowed the descent and ensured a gentle impact with the water.
Recovery ships positioned in the retrieval area would retrieve the boosters, tow them back to land, and prepare them for refurbishment and reuse.
Reusability and Refurbishment:
The Solid Rocket Boosters were designed to be reusable, offering cost savings for the Space Shuttle program.
After recovery, the boosters underwent an extensive refurbishment process, including disassembly, cleaning, inspection, replacement of worn or damaged components, and propellant reload.
This refurbishment process allowed each SRB to be flown multiple times, reducing overall launch costs.
In summary, the Space Shuttle External Tank and Solid Rocket Boosters were integral components of the Space Shuttle system. The External Tank provided the necessary propellants for the Orbiter's main engines, while the Solid Rocket Boosters generated the majority of the thrust during the initial ascent phase. The External Tank was not reusable and was jettisoned after use, while the SRBs were recovered, refurbished, and reused for subsequent missions. These components worked together to propel the Space Shuttle into orbit, advancing human space exploration and scientific endeavors.
The John F. Kennedy Space Center (KSC, originally known as the NASA Launch Operations Center), located on Merritt Island, Florida, is one of the National Aeronautics and Space Administration's (NASA) ten field centers. Since December 1968, KSC has been NASA's primary launch center of American spaceflight, research, and technology. Launch operations for the Apollo, Skylab and Space Shuttle programs were carried out from Kennedy Space Center Launch Complex 39 and managed by KSC. Located on the east coast of Florida, KSC is adjacent to Cape Canaveral Space Force Station (CCSFS). The management of the two entities work very closely together, share resources and operate facilities on each other's property.
Though the first Apollo flights and all Project Mercury and Project Gemini flights took off from the then-Cape Canaveral Air Force Station, the launches were managed by KSC and its previous organization, the Launch Operations Directorate. Starting with the fourth Gemini mission, the NASA launch control center in Florida (Mercury Control Center, later the Launch Control Center) began handing off control of the vehicle to the Mission Control Center in Houston, shortly after liftoff; in prior missions it held control throughout the entire mission.
Additionally, the center manages launch of robotic and commercial crew missions and researches food production and in-situ resource utilization for off-Earth exploration. Since 2010, the center has worked to become a multi-user spaceport through industry partnerships, even adding a new launch pad (LC-39C) in 2015.
There are about 700 facilities and buildings grouped throughout the center's 144,000 acres (580 km2). Among the unique facilities at KSC are the 525-foot (160 m) tall Vehicle Assembly Building for stacking NASA's largest rockets, the Launch Control Center, which conducts space launches at KSC, the Operations and Checkout Building, which houses the astronauts dormitories and suit-up area, a Space Station factory, and a 3-mile (4.8 km) long Shuttle Landing Facility. There is also a Visitor Complex on site that is open to the public.
Since 1949, the military had been performing launch operations at what would become Cape Canaveral Space Force Station. In December 1959, the Department of Defense transferred 5,000 personnel and the Missile Firing Laboratory to NASA to become the Launch Operations Directorate under NASA's Marshall Space Flight Center.
President John F. Kennedy's 1961 goal of a crewed lunar landing by 1970 required an expansion of launch operations. On July 1, 1962, the Launch Operations Directorate was separated from MSFC to become the Launch Operations Center (LOC). Also, Cape Canaveral was inadequate to host the new launch facility design required for the mammoth 363-foot (111 m) tall, 7,500,000-pound-force (33,000 kN) thrust Saturn V rocket, which would be assembled vertically in a large hangar and transported on a mobile platform to one of several launch pads. Therefore, the decision was made to build a new LOC site located adjacent to Cape Canaveral on Merritt Island.
NASA began land acquisition in 1962, buying title to 131 square miles (340 km2) and negotiating with the state of Florida for an additional 87 square miles (230 km2). The major buildings in KSC's Industrial Area were designed by architect Charles Luckman. Construction began in November 1962, and Kennedy visited the site twice in 1962, and again just a week before his assassination on November 22, 1963.
On November 29, 1963, the facility was named by President Lyndon B. Johnson under Executive Order 11129. Johnson's order joined both the civilian LOC and the military Cape Canaveral station ("the facilities of Station No. 1 of the Atlantic Missile Range") under the designation "John F. Kennedy Space Center", spawning some confusion joining the two in the public mind. NASA Administrator James E. Webb clarified this by issuing a directive stating the Kennedy Space Center name applied only to the LOC, while the Air Force issued a general order renaming the military launch site Cape Kennedy Air Force Station.
Located on Merritt Island, Florida, the center is north-northwest of Cape Canaveral on the Atlantic Ocean, midway between Miami and Jacksonville on Florida's Space Coast, due east of Orlando. It is 34 miles (55 km) long and roughly six miles (9.7 km) wide, covering 219 square miles (570 km2). KSC is a major central Florida tourist destination and is approximately one hour's drive from the Orlando area. The Kennedy Space Center Visitor Complex offers public tours of the center and Cape Canaveral Space Force Station.
From 1967 through 1973, there were 13 Saturn V launches, including the ten remaining Apollo missions after Apollo 7. The first of two uncrewed flights, Apollo 4 (Apollo-Saturn 501) on November 9, 1967, was also the first rocket launch from KSC. The Saturn V's first crewed launch on December 21, 1968, was Apollo 8's lunar orbiting mission. The next two missions tested the Lunar Module: Apollo 9 (Earth orbit) and Apollo 10 (lunar orbit). Apollo 11, launched from Pad A on July 16, 1969, made the first Moon landing on July 20. The Apollo 11 launch included crewmembers Neil Armstrong, Michael Collins, and Buzz Aldrin, and attracted a record-breaking 650 million television viewers. Apollo 12 followed four months later. From 1970 to 1972, the Apollo program concluded at KSC with the launches of missions 13 through 17.
On May 14, 1973, the last Saturn V launch put the Skylab space station in orbit from Pad 39A. By this time, the Cape Kennedy pads 34 and 37 used for the Saturn IB were decommissioned, so Pad 39B was modified to accommodate the Saturn IB, and used to launch three crewed missions to Skylab that year, as well as the final Apollo spacecraft for the Apollo–Soyuz Test Project in 1975.
As the Space Shuttle was being designed, NASA received proposals for building alternative launch-and-landing sites at locations other than KSC, which demanded study. KSC had important advantages, including its existing facilities; location on the Intracoastal Waterway; and its southern latitude, which gives a velocity advantage to missions launched in easterly near-equatorial orbits. Disadvantages included: its inability to safely launch military missions into polar orbit, since spent boosters would be likely to fall on the Carolinas or Cuba; corrosion from the salt air; and frequent cloudy or stormy weather. Although building a new site at White Sands Missile Range in New Mexico was seriously considered, NASA announced its decision in April 1972 to use KSC for the shuttle. Since the Shuttle could not be landed automatically or by remote control, the launch of Columbia on April 12, 1981 for its first orbital mission STS-1, was NASA's first crewed launch of a vehicle that had not been tested in prior uncrewed launches.
In 1976, the VAB's south parking area was the site of Third Century America, a science and technology display commemorating the U.S. Bicentennial. Concurrent with this event, the U.S. flag was painted on the south side of the VAB. During the late 1970s, LC-39 was reconfigured to support the Space Shuttle. Two Orbiter Processing Facilities were built near the VAB as hangars with a third added in the 1980s.
KSC's 2.9-mile (4.7 km) Shuttle Landing Facility (SLF) was the orbiters' primary end-of-mission landing site, although the first KSC landing did not take place until the tenth flight, when Challenger completed STS-41-B on February 11, 1984; the primary landing site until then was Edwards Air Force Base in California, subsequently used as a backup landing site. The SLF also provided a return-to-launch-site (RTLS) abort option, which was not utilized. The SLF is among the longest runways in the world.
On October 28, 2009, the Ares I-X launch from Pad 39B was the first uncrewed launch from KSC since the Skylab workshop in 1973.
Beginning in 1958, NASA and military worked side by side on robotic mission launches (previously referred to as unmanned), cooperating as they broke ground in the field. In the early 1960s, NASA had as many as two robotic mission launches a month. The frequent number of flights allowed for quick evolution of the vehicles, as engineers gathered data, learned from anomalies and implemented upgrades. In 1963, with the intent of KSC ELV work focusing on the ground support equipment and facilities, a separate Atlas/Centaur organization was formed under NASA's Lewis Center (now Glenn Research Center (GRC)), taking that responsibility from the Launch Operations Center (aka KSC).
Though almost all robotics missions launched from the Cape Canaveral Space Force Station (CCSFS), KSC "oversaw the final assembly and testing of rockets as they arrived at the Cape." In 1965, KSC's Unmanned Launch Operations directorate became responsible for all NASA uncrewed launch operations, including those at Vandenberg Space Force Base. From the 1950s to 1978, KSC chose the rocket and payload processing facilities for all robotic missions launching in the U.S., overseeing their near launch processing and checkout. In addition to government missions, KSC performed this service for commercial and foreign missions also, though non-U.S. government entities provided reimbursement. NASA also funded Cape Canaveral Space Force Station launch pad maintenance and launch vehicle improvements.
All this changed with the Commercial Space Launch Act of 1984, after which NASA only coordinated its own and National Oceanic and Atmospheric Administration (NOAA) ELV launches. Companies were able to "operate their own launch vehicles" and utilize NASA's launch facilities. Payload processing handled by private firms also started to occur outside of KSC. Reagan's 1988 space policy furthered the movement of this work from KSC to commercial companies. That same year, launch complexes on Cape Canaveral Air Force Force Station started transferring from NASA to Air Force Space Command management.
In the 1990s, though KSC was not performing the hands-on ELV work, engineers still maintained an understanding of ELVs and had contracts allowing them insight into the vehicles so they could provide knowledgeable oversight. KSC also worked on ELV research and analysis and the contractors were able to utilize KSC personnel as a resource for technical issues. KSC, with the payload and launch vehicle industries, developed advances in automation of the ELV launch and ground operations to enable competitiveness of U.S. rockets against the global market.
In 1998, the Launch Services Program (LSP) formed at KSC, pulling together programs (and personnel) that already existed at KSC, GRC, Goddard Space Flight Center, and more to manage the launch of NASA and NOAA robotic missions. Cape Canaveral Space Force Station and VAFB are the primary launch sites for LSP missions, though other sites are occasionally used. LSP payloads such as the Mars Science Laboratory have been processed at KSC before being transferred to a launch pad on Cape Canaveral Space Force Station.
On 16 November 2022, at 06:47:44 UTC the Space Launch System (SLS) was launched from Complex 39B as part of the Artemis 1 mission.
As the International Space Station modules design began in the early 1990s, KSC began to work with other NASA centers and international partners to prepare for processing before launch onboard the Space Shuttles. KSC utilized its hands-on experience processing the 22 Spacelab missions in the Operations and Checkout Building to gather expectations of ISS processing. These experiences were incorporated into the design of the Space Station Processing Facility (SSPF), which began construction in 1991. The Space Station Directorate formed in 1996. KSC personnel were embedded at station module factories for insight into their processes.
From 1997 to 2007, KSC planned and performed on the ground integration tests and checkouts of station modules: three Multi-Element Integration Testing (MEIT) sessions and the Integration Systems Test (IST). Numerous issues were found and corrected that would have been difficult to nearly impossible to do on-orbit.
Today KSC continues to process ISS payloads from across the world before launch along with developing its experiments for on orbit. The proposed Lunar Gateway would be manufactured and processed at the Space Station Processing Facility.
The following are current programs and initiatives at Kennedy Space Center:
Commercial Crew Program
Exploration Ground Systems Program
NASA is currently designing the next heavy launch vehicle known as the Space Launch System (SLS) for continuation of human spaceflight.
On December 5, 2014, NASA launched the first uncrewed flight test of the Orion Multi-Purpose Crew Vehicle (MPCV), currently under development to facilitate human exploration of the Moon and Mars.
Launch Services Program
Educational Launch of Nanosatellites (ELaNa)
Research and Technology
Artemis program
Lunar Gateway
International Space Station Payloads
Camp KSC: educational camps for schoolchildren in spring and summer, with a focus on space, aviation and robotics.
The KSC Industrial Area, where many of the center's support facilities are located, is 5 miles (8 km) south of LC-39. It includes the Headquarters Building, the Operations and Checkout Building and the Central Instrumentation Facility. The astronaut crew quarters are in the O&C; before it was completed, the astronaut crew quarters were located in Hangar S at the Cape Canaveral Missile Test Annex (now Cape Canaveral Space Force Station). Located at KSC was the Merritt Island Spaceflight Tracking and Data Network station (MILA), a key radio communications and spacecraft tracking complex.
Facilities at the Kennedy Space Center are directly related to its mission to launch and recover missions. Facilities are available to prepare and maintain spacecraft and payloads for flight. The Headquarters (HQ) Building houses offices for the Center Director, library, film and photo archives, a print shop and security. When the KSC Library first opened, it was part of the Army Ballistic Missile Agency. However, in 1965, the library moved into three separate sections in the newly opened NASA headquarters before eventually becoming a single unit in 1970. The library contains over four million items related to the history and the work at Kennedy. As one of ten NASA center libraries in the country, their collection focuses on engineering, science, and technology. The archives contain planning documents, film reels, and original photographs covering the history of KSC. The library is not open to the public but is available for KSC, Space Force, and Navy employees who work on site. Many of the media items from the collection are digitized and available through NASA's KSC Media Gallery Archived December 6, 2020, at the Wayback Machine or through their more up-to-date Flickr gallery.
A new Headquarters Building was completed in 2019 as part of the Central Campus consolidation. Groundbreaking began in 2014.
The center operated its own 17-mile (27 km) short-line railroad. This operation was discontinued in 2015, with the sale of its final two locomotives. A third had already been donated to a museum. The line was costing $1.3 million annually to maintain.
The Neil Armstrong Operations and Checkout Building (O&C) (previously known as the Manned Spacecraft Operations Building) is a historic site on the U.S. National Register of Historic Places dating back to the 1960s and was used to receive, process, and integrate payloads for the Gemini and Apollo programs, the Skylab program in the 1970s, and for initial segments of the International Space Station through the 1990s. The Apollo and Space Shuttle astronauts would board the astronaut transfer van to launch complex 39 from the O&C building.
The three-story, 457,000-square-foot (42,500 m2) Space Station Processing Facility (SSPF) consists of two enormous processing bays, an airlock, operational control rooms, laboratories, logistics areas and office space for support of non-hazardous Space Station and Shuttle payloads to ISO 14644-1 class 5 standards. Opened in 1994, it is the largest factory building in the KSC industrial area.
The Vertical Processing Facility (VPF) features a 71-by-38-foot (22 by 12 m) door where payloads that are processed in the vertical position are brought in and manipulated with two overhead cranes and a hoist capable of lifting up to 35 short tons (32 t).
The Hypergolic Maintenance and Checkout Area (HMCA) comprises three buildings that are isolated from the rest of the industrial area because of the hazardous materials handled there. Hypergolic-fueled modules that made up the Space Shuttle Orbiter's reaction control system, orbital maneuvering system and auxiliary power units were stored and serviced in the HMCF.
The Multi-Payload Processing Facility is a 19,647 square feet (1,825.3 m2) building used for Orion spacecraft and payload processing.
The Payload Hazardous Servicing Facility (PHSF) contains a 70-by-110-foot (21 by 34 m) service bay, with a 100,000-pound (45,000 kg), 85-foot (26 m) hook height. It also contains a 58-by-80-foot (18 by 24 m) payload airlock. Its temperature is maintained at 70 °F (21 °C).[55]
The Blue Origin rocket manufacturing facility is located immediately south of the KSC visitor complex. Completed in 2019, it serves as the company's factory for the manufacture of New Glenn orbital rockets.
Launch Complex 39 (LC-39) was originally built for the Saturn V, the largest and most powerful operational launch vehicle until the Space Launch System, for the Apollo crewed Moon landing program. Since the end of the Apollo program in 1972, LC-39 has been used to launch every NASA human space flight, including Skylab (1973), the Apollo–Soyuz Test Project (1975), and the Space Shuttle program (1981–2011).
Since December 1968, all launch operations have been conducted from launch pads A and B at LC-39. Both pads are on the ocean, 3 miles (4.8 km) east of the VAB. From 1969 to 1972, LC-39 was the "Moonport" for all six Apollo crewed Moon landing missions using the Saturn V, and was used from 1981 to 2011 for all Space Shuttle launches.
Human missions to the Moon required the large three-stage Saturn V rocket, which was 363 feet (111 meters) tall and 33 feet (10 meters) in diameter. At KSC, Launch Complex 39 was built on Merritt Island to accommodate the new rocket. Construction of the $800 million project began in November 1962. LC-39 pads A and B were completed by October 1965 (planned Pads C, D and E were canceled), the VAB was completed in June 1965, and the infrastructure by late 1966.
The complex includes: the Vehicle Assembly Building (VAB), a 130,000,000 cubic feet (3,700,000 m3) hangar capable of holding four Saturn Vs. The VAB was the largest structure in the world by volume when completed in 1965.
a transporter capable of carrying 5,440 tons along a crawlerway to either of two launch pads;
a 446-foot (136 m) mobile service structure, with three Mobile Launcher Platforms, each containing a fixed launch umbilical tower;
the Launch Control Center; and
a news media facility.
Launch Complex 48 (LC-48) is a multi-user launch site under construction for small launchers and spacecraft. It will be located between Launch Complex 39A and Space Launch Complex 41, with LC-39A to the north and SLC-41 to the south. LC-48 will be constructed as a "clean pad" to support multiple launch systems with differing propellant needs. While initially only planned to have a single pad, the complex is capable of being expanded to two at a later date.
As a part of promoting commercial space industry growth in the area and the overall center as a multi-user spaceport, KSC leases some of its properties. Here are some major examples:
Exploration Park to multiple users (partnership with Space Florida)
Shuttle Landing Facility to Space Florida (who contracts use to private companies)
Orbiter Processing Facility (OPF)-3 to Boeing (for CST-100 Starliner)
Launch Complex 39A, Launch Control Center Firing Room 4 and land for SpaceX's Roberts Road facility (Hanger X) to SpaceX
O&C High Bay to Lockheed Martin (for Orion processing)
Land for FPL's Space Coast Next Generation Solar Energy Center to Florida Power and Light (FPL)
Hypergolic Maintenance Facility (HMF) to United Paradyne Corporation (UPC)
The Kennedy Space Center Visitor Complex, operated by Delaware North since 1995, has a variety of exhibits, artifacts, displays and attractions on the history and future of human and robotic spaceflight. Bus tours of KSC originate from here. The complex also includes the separate Apollo/Saturn V Center, north of the VAB and the United States Astronaut Hall of Fame, six miles west near Titusville. There were 1.5 million visitors in 2009. It had some 700 employees.
It was announced on May 29, 2015, that the Astronaut Hall of Fame exhibit would be moved from its current location to another location within the Visitor Complex to make room for an upcoming high-tech attraction entitled "Heroes and Legends". The attraction, designed by Orlando-based design firm Falcon's Treehouse, opened November 11, 2016.
In March 2016, the visitor center unveiled the new location of the iconic countdown clock at the complex's entrance; previously, the clock was located with a flagpole at the press site. The clock was originally built and installed in 1969 and listed with the flagpole in the National Register of Historic Places in January 2000. In 2019, NASA celebrated the 50th anniversary of the Apollo program, and the launch of Apollo 10 on May 18. In summer of 2019, Lunar Module 9 (LM-9) was relocated to the Apollo/Saturn V Center as part of an initiative to rededicate the center and celebrate the 50th anniversary of the Apollo Program.
Historic locations
NASA lists the following Historic Districts at KSC; each district has multiple associated facilities:
Launch Complex 39: Pad A Historic District
Launch Complex 39: Pad B Historic District
Shuttle Landing Facility (SLF) Area Historic District
Orbiter Processing Historic District
Solid Rocket Booster (SRB) Disassembly and Refurbishment Complex Historic District
NASA KSC Railroad System Historic District
NASA-owned Cape Canaveral Space Force Station Industrial Area Historic District
There are 24 historic properties outside of these historic districts, including the Space Shuttle Atlantis, Vehicle Assembly Building, Crawlerway, and Operations and Checkout Building.[71] KSC has one National Historic Landmark, 78 National Register of Historic Places (NRHP) listed or eligible sites, and 100 Archaeological Sites.
Further information: John F. Kennedy Space Center MPS
Other facilities
The Rotation, Processing and Surge Facility (RPSF) is responsible for the preparation of solid rocket booster segments for transportation to the Vehicle Assembly Building (VAB). The RPSF was built in 1984 to perform SRB operations that had previously been conducted in high bays 2 and 4 of the VAB at the beginning of the Space Shuttle program. It was used until the Space Shuttle's retirement, and will be used in the future by the Space Launch System[75] (SLS) and OmegA rockets.
Rauschenberg merged the realms of kitsch and fine art, employing both traditional media and found objects within his "combines" by inserting appropriated photographs and urban detritus amidst standard wall paintings.
Rauschenberg believed that painting related to "both art and life. Neither can be made." Following from this belief, he created artworks that move between these realms in constant dialogue with the viewers and the surrounding world, as well as with art history.
On a strict historical reading, the expression ‘conceptual art’ refers to the artistic movement that reached its pinnacle between 1966 and 1972 (Lippard 1973).[1] Amongst its most famous adherents at its early stage we find artists such as Joseph Kosuth, Robert Morris, Joseph Beuys, Adrian Piper, to name but a few. What unites the conceptual art of this period is the absorption of the lessons learnt from other twentieth-century art movements such as Dadaism, Surrealism, Suprematism, Abstract Expressionism and the Fluxus group, together with the ambition, once and for all, to ‘free’ art of the Modernist paradigm. Most importantly, perhaps, conceptual art of the 1960s and 70s sought to overcome a backdrop against which art's principal aim is to produce something beautiful or aesthetically pleasing. Art, early conceptual artists held, is redundant if it does not make us think. In their belief that most artistic institutions were not conducive to reflection but merely promoted a consumerist conception of art and artists, conceptual artists in the mid-1960s to the early 1970s intead tried to encourage a revisionary understanding of art, the artist, and artistic experience.
IR HDR. IR converted Canon 40D (Lifepixel.com) . Canon 17-55 F2.8 IS lens. Shot at ISO 100, F8, AEB +/-3 total of 7 exposures processed with Photomatix. Levels adjusted in PSE. Blue and Red color channels swapped with GIMP.
High Dynamic Range (HDR)
High-dynamic-range imaging (HDRI) is a high dynamic range (HDR) technique used in imaging and photography to reproduce a greater dynamic range of luminosity than is possible with standard digital imaging or photographic techniques. The aim is to present a similar range of luminance to that experienced through the human visual system. The human eye, through adaptation of the iris and other methods, adjusts constantly to adapt to a broad range of luminance present in the environment. The brain continuously interprets this information so that a viewer can see in a wide range of light conditions.
HDR images can represent a greater range of luminance levels than can be achieved using more 'traditional' methods, such as many real-world scenes containing very bright, direct sunlight to extreme shade, or very faint nebulae. This is often achieved by capturing and then combining several different, narrower range, exposures of the same subject matter. Non-HDR cameras take photographs with a limited exposure range, referred to as LDR, resulting in the loss of detail in highlights or shadows.
The two primary types of HDR images are computer renderings and images resulting from merging multiple low-dynamic-range (LDR) or standard-dynamic-range (SDR) photographs. HDR images can also be acquired using special image sensors, such as an oversampled binary image sensor.
Due to the limitations of printing and display contrast, the extended luminosity range of an HDR image has to be compressed to be made visible. The method of rendering an HDR image to a standard monitor or printing device is called tone mapping. This method reduces the overall contrast of an HDR image to facilitate display on devices or printouts with lower dynamic range, and can be applied to produce images with preserved local contrast (or exaggerated for artistic effect).
In photography, dynamic range is measured in exposure value (EV) differences (known as stops). An increase of one EV, or 'one stop', represents a doubling of the amount of light. Conversely, a decrease of one EV represents a halving of the amount of light. Therefore, revealing detail in the darkest of shadows requires high exposures, while preserving detail in very bright situations requires very low exposures. Most cameras cannot provide this range of exposure values within a single exposure, due to their low dynamic range. High-dynamic-range photographs are generally achieved by capturing multiple standard-exposure images, often using exposure bracketing, and then later merging them into a single HDR image, usually within a photo manipulation program). Digital images are often encoded in a camera's raw image format, because 8-bit JPEG encoding does not offer a wide enough range of values to allow fine transitions (and regarding HDR, later introduces undesirable effects due to lossy compression).
Any camera that allows manual exposure control can make images for HDR work, although one equipped with auto exposure bracketing (AEB) is far better suited. Images from film cameras are less suitable as they often must first be digitized, so that they can later be processed using software HDR methods.
In most imaging devices, the degree of exposure to light applied to the active element (be it film or CCD) can be altered in one of two ways: by either increasing/decreasing the size of the aperture or by increasing/decreasing the time of each exposure. Exposure variation in an HDR set is only done by altering the exposure time and not the aperture size; this is because altering the aperture size also affects the depth of field and so the resultant multiple images would be quite different, preventing their final combination into a single HDR image.
An important limitation for HDR photography is that any movement between successive images will impede or prevent success in combining them afterwards. Also, as one must create several images (often three or five and sometimes more) to obtain the desired luminance range, such a full 'set' of images takes extra time. HDR photographers have developed calculation methods and techniques to partially overcome these problems, but the use of a sturdy tripod is, at least, advised.
Some cameras have an auto exposure bracketing (AEB) feature with a far greater dynamic range than others, from the 3 EV of the Canon EOS 40D, to the 18 EV of the Canon EOS-1D Mark II. As the popularity of this imaging method grows, several camera manufactures are now offering built-in HDR features. For example, the Pentax K-7 DSLR has an HDR mode that captures an HDR image and outputs (only) a tone mapped JPEG file. The Canon PowerShot G12, Canon PowerShot S95 and Canon PowerShot S100 offer similar features in a smaller format.. Nikon's approach is called 'Active D-Lighting' which applies exposure compensation and tone mapping to the image as it comes from the sensor, with the accent being on retaing a realistic effect . Some smartphones provide HDR modes, and most mobile platforms have apps that provide HDR picture taking.
Camera characteristics such as gamma curves, sensor resolution, noise, photometric calibration and color calibration affect resulting high-dynamic-range images.
Color film negatives and slides consist of multiple film layers that respond to light differently. As a consequence, transparent originals (especially positive slides) feature a very high dynamic range
Tone mapping
Tone mapping reduces the dynamic range, or contrast ratio, of an entire image while retaining localized contrast. Although it is a distinct operation, tone mapping is often applied to HDRI files by the same software package.
Several software applications are available on the PC, Mac and Linux platforms for producing HDR files and tone mapped images. Notable titles include
Adobe Photoshop
Aurora HDR
Dynamic Photo HDR
HDR Efex Pro
HDR PhotoStudio
Luminance HDR
MagicRaw
Oloneo PhotoEngine
Photomatix Pro
PTGui
Information stored in high-dynamic-range images typically corresponds to the physical values of luminance or radiance that can be observed in the real world. This is different from traditional digital images, which represent colors as they should appear on a monitor or a paper print. Therefore, HDR image formats are often called scene-referred, in contrast to traditional digital images, which are device-referred or output-referred. Furthermore, traditional images are usually encoded for the human visual system (maximizing the visual information stored in the fixed number of bits), which is usually called gamma encoding or gamma correction. The values stored for HDR images are often gamma compressed (power law) or logarithmically encoded, or floating-point linear values, since fixed-point linear encodings are increasingly inefficient over higher dynamic ranges.
HDR images often don't use fixed ranges per color channel—other than traditional images—to represent many more colors over a much wider dynamic range. For that purpose, they don't use integer values to represent the single color channels (e.g., 0-255 in an 8 bit per pixel interval for red, green and blue) but instead use a floating point representation. Common are 16-bit (half precision) or 32-bit floating point numbers to represent HDR pixels. However, when the appropriate transfer function is used, HDR pixels for some applications can be represented with a color depth that has as few as 10–12 bits for luminance and 8 bits for chrominance without introducing any visible quantization artifacts.
History of HDR photography
The idea of using several exposures to adequately reproduce a too-extreme range of luminance was pioneered as early as the 1850s by Gustave Le Gray to render seascapes showing both the sky and the sea. Such rendering was impossible at the time using standard methods, as the luminosity range was too extreme. Le Gray used one negative for the sky, and another one with a longer exposure for the sea, and combined the two into one picture in positive.
Mid 20th century
Manual tone mapping was accomplished by dodging and burning – selectively increasing or decreasing the exposure of regions of the photograph to yield better tonality reproduction. This was effective because the dynamic range of the negative is significantly higher than would be available on the finished positive paper print when that is exposed via the negative in a uniform manner. An excellent example is the photograph Schweitzer at the Lamp by W. Eugene Smith, from his 1954 photo essay A Man of Mercy on Dr. Albert Schweitzer and his humanitarian work in French Equatorial Africa. The image took 5 days to reproduce the tonal range of the scene, which ranges from a bright lamp (relative to the scene) to a dark shadow.
Ansel Adams elevated dodging and burning to an art form. Many of his famous prints were manipulated in the darkroom with these two methods. Adams wrote a comprehensive book on producing prints called The Print, which prominently features dodging and burning, in the context of his Zone System.
With the advent of color photography, tone mapping in the darkroom was no longer possible due to the specific timing needed during the developing process of color film. Photographers looked to film manufacturers to design new film stocks with improved response, or continued to shoot in black and white to use tone mapping methods.
Color film capable of directly recording high-dynamic-range images was developed by Charles Wyckoff and EG&G "in the course of a contract with the Department of the Air Force". This XR film had three emulsion layers, an upper layer having an ASA speed rating of 400, a middle layer with an intermediate rating, and a lower layer with an ASA rating of 0.004. The film was processed in a manner similar to color films, and each layer produced a different color. The dynamic range of this extended range film has been estimated as 1:108. It has been used to photograph nuclear explosions, for astronomical photography, for spectrographic research, and for medical imaging. Wyckoff's detailed pictures of nuclear explosions appeared on the cover of Life magazine in the mid-1950s.
Late 20th century
Georges Cornuéjols and licensees of his patents (Brdi, Hymatom) introduced the principle of HDR video image, in 1986, by interposing a matricial LCD screen in front of the camera's image sensor, increasing the sensors dynamic by five stops. The concept of neighborhood tone mapping was applied to video cameras by a group from the Technion in Israel led by Dr. Oliver Hilsenrath and Prof. Y.Y.Zeevi who filed for a patent on this concept in 1988.
In February and April 1990, Georges Cornuéjols introduced the first real-time HDR camera that combined two images captured by a sensor3435 or simultaneously3637 by two sensors of the camera. This process is known as bracketing used for a video stream.
In 1991, the first commercial video camera was introduced that performed real-time capturing of multiple images with different exposures, and producing an HDR video image, by Hymatom, licensee of Georges Cornuéjols.
Also in 1991, Georges Cornuéjols introduced the HDR+ image principle by non-linear accumulation of images to increase the sensitivity of the camera: for low-light environments, several successive images are accumulated, thus increasing the signal to noise ratio.
In 1993, another commercial medical camera producing an HDR video image, by the Technion.
Modern HDR imaging uses a completely different approach, based on making a high-dynamic-range luminance or light map using only global image operations (across the entire image), and then tone mapping the result. Global HDR was first introduced in 19931 resulting in a mathematical theory of differently exposed pictures of the same subject matter that was published in 1995 by Steve Mann and Rosalind Picard.
On October 28, 1998, Ben Sarao created one of the first nighttime HDR+G (High Dynamic Range + Graphic image)of STS-95 on the launch pad at NASA's Kennedy Space Center. It consisted of four film images of the shuttle at night that were digitally composited with additional digital graphic elements. The image was first exhibited at NASA Headquarters Great Hall, Washington DC in 1999 and then published in Hasselblad Forum, Issue 3 1993, Volume 35 ISSN 0282-5449.
The advent of consumer digital cameras produced a new demand for HDR imaging to improve the light response of digital camera sensors, which had a much smaller dynamic range than film. Steve Mann developed and patented the global-HDR method for producing digital images having extended dynamic range at the MIT Media Laboratory. Mann's method involved a two-step procedure: (1) generate one floating point image array by global-only image operations (operations that affect all pixels identically, without regard to their local neighborhoods); and then (2) convert this image array, using local neighborhood processing (tone-remapping, etc.), into an HDR image. The image array generated by the first step of Mann's process is called a lightspace image, lightspace picture, or radiance map. Another benefit of global-HDR imaging is that it provides access to the intermediate light or radiance map, which has been used for computer vision, and other image processing operations.
21st century
In 2005, Adobe Systems introduced several new features in Photoshop CS2 including Merge to HDR, 32 bit floating point image support, and HDR tone mapping.
On June 30, 2016, Microsoft added support for the digital compositing of HDR images to Windows 10 using the Universal Windows Platform.
HDR sensors
Modern CMOS image sensors can often capture a high dynamic range from a single exposure. The wide dynamic range of the captured image is non-linearly compressed into a smaller dynamic range electronic representation. However, with proper processing, the information from a single exposure can be used to create an HDR image.
Such HDR imaging is used in extreme dynamic range applications like welding or automotive work. Some other cameras designed for use in security applications can automatically provide two or more images for each frame, with changing exposure. For example, a sensor for 30fps video will give out 60fps with the odd frames at a short exposure time and the even frames at a longer exposure time. Some of the sensor may even combine the two images on-chip so that a wider dynamic range without in-pixel compression is directly available to the user for display or processing.
en.wikipedia.org/wiki/High-dynamic-range_imaging
Infrared Photography
In infrared photography, the film or image sensor used is sensitive to infrared light. The part of the spectrum used is referred to as near-infrared to distinguish it from far-infrared, which is the domain of thermal imaging. Wavelengths used for photography range from about 700 nm to about 900 nm. Film is usually sensitive to visible light too, so an infrared-passing filter is used; this lets infrared (IR) light pass through to the camera, but blocks all or most of the visible light spectrum (the filter thus looks black or deep red). ("Infrared filter" may refer either to this type of filter or to one that blocks infrared but passes other wavelengths.)
When these filters are used together with infrared-sensitive film or sensors, "in-camera effects" can be obtained; false-color or black-and-white images with a dreamlike or sometimes lurid appearance known as the "Wood Effect," an effect mainly caused by foliage (such as tree leaves and grass) strongly reflecting in the same way visible light is reflected from snow. There is a small contribution from chlorophyll fluorescence, but this is marginal and is not the real cause of the brightness seen in infrared photographs. The effect is named after the infrared photography pioneer Robert W. Wood, and not after the material wood, which does not strongly reflect infrared.
The other attributes of infrared photographs include very dark skies and penetration of atmospheric haze, caused by reduced Rayleigh scattering and Mie scattering, respectively, compared to visible light. The dark skies, in turn, result in less infrared light in shadows and dark reflections of those skies from water, and clouds will stand out strongly. These wavelengths also penetrate a few millimeters into skin and give a milky look to portraits, although eyes often look black.
Until the early 20th century, infrared photography was not possible because silver halide emulsions are not sensitive to longer wavelengths than that of blue light (and to a lesser extent, green light) without the addition of a dye to act as a color sensitizer. The first infrared photographs (as distinct from spectrographs) to be published appeared in the February 1910 edition of The Century Magazine and in the October 1910 edition of the Royal Photographic Society Journal to illustrate papers by Robert W. Wood, who discovered the unusual effects that now bear his name. The RPS co-ordinated events to celebrate the centenary of this event in 2010. Wood's photographs were taken on experimental film that required very long exposures; thus, most of his work focused on landscapes. A further set of infrared landscapes taken by Wood in Italy in 1911 used plates provided for him by CEK Mees at Wratten & Wainwright. Mees also took a few infrared photographs in Portugal in 1910, which are now in the Kodak archives.
Infrared-sensitive photographic plates were developed in the United States during World War I for spectroscopic analysis, and infrared sensitizing dyes were investigated for improved haze penetration in aerial photography. After 1930, new emulsions from Kodak and other manufacturers became useful to infrared astronomy.
Infrared photography became popular with photography enthusiasts in the 1930s when suitable film was introduced commercially. The Times regularly published landscape and aerial photographs taken by their staff photographers using Ilford infrared film. By 1937 33 kinds of infrared film were available from five manufacturers including Agfa, Kodak and Ilford. Infrared movie film was also available and was used to create day-for-night effects in motion pictures, a notable example being the pseudo-night aerial sequences in the James Cagney/Bette Davis movie The Bride Came COD.
False-color infrared photography became widely practiced with the introduction of Kodak Ektachrome Infrared Aero Film and Ektachrome Infrared EIR. The first version of this, known as Kodacolor Aero-Reversal-Film, was developed by Clark and others at the Kodak for camouflage detection in the 1940s. The film became more widely available in 35mm form in the 1960s but KODAK AEROCHROME III Infrared Film 1443 has been discontinued.
Infrared photography became popular with a number of 1960s recording artists, because of the unusual results; Jimi Hendrix, Donovan, Frank and a slow shutter speed without focus compensation, however wider apertures like f/2.0 can produce sharp photos only if the lens is meticulously refocused to the infrared index mark, and only if this index mark is the correct one for the filter and film in use. However, it should be noted that diffraction effects inside a camera are greater at infrared wavelengths so that stopping down the lens too far may actually reduce sharpness.
Most apochromatic ('APO') lenses do not have an Infrared index mark and do not need to be refocused for the infrared spectrum because they are already optically corrected into the near-infrared spectrum. Catadioptric lenses do not often require this adjustment because their mirror containing elements do not suffer from chromatic aberration and so the overall aberration is comparably less. Catadioptric lenses do, of course, still contain lenses, and these lenses do still have a dispersive property.
Infrared black-and-white films require special development times but development is usually achieved with standard black-and-white film developers and chemicals (like D-76). Kodak HIE film has a polyester film base that is very stable but extremely easy to scratch, therefore special care must be used in the handling of Kodak HIE throughout the development and printing/scanning process to avoid damage to the film. The Kodak HIE film was sensitive to 900 nm.
As of November 2, 2007, "KODAK is preannouncing the discontinuance" of HIE Infrared 35 mm film stating the reasons that, "Demand for these products has been declining significantly in recent years, and it is no longer practical to continue to manufacture given the low volume, the age of the product formulations and the complexity of the processes involved." At the time of this notice, HIE Infrared 135-36 was available at a street price of around $12.00 a roll at US mail order outlets.
Arguably the greatest obstacle to infrared film photography has been the increasing difficulty of obtaining infrared-sensitive film. However, despite the discontinuance of HIE, other newer infrared sensitive emulsions from EFKE, ROLLEI, and ILFORD are still available, but these formulations have differing sensitivity and specifications from the venerable KODAK HIE that has been around for at least two decades. Some of these infrared films are available in 120 and larger formats as well as 35 mm, which adds flexibility to their application. With the discontinuance of Kodak HIE, Efke's IR820 film has become the only IR film on the marketneeds update with good sensitivity beyond 750 nm, the Rollei film does extend beyond 750 nm but IR sensitivity falls off very rapidly.
Color infrared transparency films have three sensitized layers that, because of the way the dyes are coupled to these layers, reproduce infrared as red, red as green, and green as blue. All three layers are sensitive to blue so the film must be used with a yellow filter, since this will block blue light but allow the remaining colors to reach the film. The health of foliage can be determined from the relative strengths of green and infrared light reflected; this shows in color infrared as a shift from red (healthy) towards magenta (unhealthy). Early color infrared films were developed in the older E-4 process, but Kodak later manufactured a color transparency film that could be developed in standard E-6 chemistry, although more accurate results were obtained by developing using the AR-5 process. In general, color infrared does not need to be refocused to the infrared index mark on the lens.
In 2007 Kodak announced that production of the 35 mm version of their color infrared film (Ektachrome Professional Infrared/EIR) would cease as there was insufficient demand. Since 2011, all formats of color infrared film have been discontinued. Specifically, Aerochrome 1443 and SO-734.
There is no currently available digital camera that will produce the same results as Kodak color infrared film although the equivalent images can be produced by taking two exposures, one infrared and the other full-color, and combining in post-production. The color images produced by digital still cameras using infrared-pass filters are not equivalent to those produced on color infrared film. The colors result from varying amounts of infrared passing through the color filters on the photo sites, further amended by the Bayer filtering. While this makes such images unsuitable for the kind of applications for which the film was used, such as remote sensing of plant health, the resulting color tonality has proved popular artistically.
Color digital infrared, as part of full spectrum photography is gaining popularity. The ease of creating a softly colored photo with infrared characteristics has found interest among hobbyists and professionals.
In 2008, Los Angeles photographer, Dean Bennici started cutting and hand rolling Aerochrome color Infrared film. All Aerochrome medium and large format which exists today came directly from his lab. The trend in infrared photography continues to gain momentum with the success of photographer Richard Mosse and multiple users all around the world.
Digital camera sensors are inherently sensitive to infrared light, which would interfere with the normal photography by confusing the autofocus calculations or softening the image (because infrared light is focused differently from visible light), or oversaturating the red channel. Also, some clothing is transparent in the infrared, leading to unintended (at least to the manufacturer) uses of video cameras. Thus, to improve image quality and protect privacy, many digital cameras employ infrared blockers. Depending on the subject matter, infrared photography may not be practical with these cameras because the exposure times become overly long, often in the range of 30 seconds, creating noise and motion blur in the final image. However, for some subject matter the long exposure does not matter or the motion blur effects actually add to the image. Some lenses will also show a 'hot spot' in the centre of the image as their coatings are optimised for visible light and not for IR.
An alternative method of DSLR infrared photography is to remove the infrared blocker in front of the sensor and replace it with a filter that removes visible light. This filter is behind the mirror, so the camera can be used normally - handheld, normal shutter speeds, normal composition through the viewfinder, and focus, all work like a normal camera. Metering works but is not always accurate because of the difference between visible and infrared refraction. When the IR blocker is removed, many lenses which did display a hotspot cease to do so, and become perfectly usable for infrared photography. Additionally, because the red, green and blue micro-filters remain and have transmissions not only in their respective color but also in the infrared, enhanced infrared color may be recorded.
Since the Bayer filters in most digital cameras absorb a significant fraction of the infrared light, these cameras are sometimes not very sensitive as infrared cameras and can sometimes produce false colors in the images. An alternative approach is to use a Foveon X3 sensor, which does not have absorptive filters on it; the Sigma SD10 DSLR has a removable IR blocking filter and dust protector, which can be simply omitted or replaced by a deep red or complete visible light blocking filter. The Sigma SD14 has an IR/UV blocking filter that can be removed/installed without tools. The result is a very sensitive digital IR camera.
While it is common to use a filter that blocks almost all visible light, the wavelength sensitivity of a digital camera without internal infrared blocking is such that a variety of artistic results can be obtained with more conventional filtration. For example, a very dark neutral density filter can be used (such as the Hoya ND400) which passes a very small amount of visible light compared to the near-infrared it allows through. Wider filtration permits an SLR viewfinder to be used and also passes more varied color information to the sensor without necessarily reducing the Wood effect. Wider filtration is however likely to reduce other infrared artefacts such as haze penetration and darkened skies. This technique mirrors the methods used by infrared film photographers where black-and-white infrared film was often used with a deep red filter rather than a visually opaque one.
Another common technique with near-infrared filters is to swap blue and red channels in software (e.g. photoshop) which retains much of the characteristic 'white foliage' while rendering skies a glorious blue.
Several Sony cameras had the so-called Night Shot facility, which physically moves the blocking filter away from the light path, which makes the cameras very sensitive to infrared light. Soon after its development, this facility was 'restricted' by Sony to make it difficult for people to take photos that saw through clothing. To do this the iris is opened fully and exposure duration is limited to long times of more than 1/30 second or so. It is possible to shoot infrared but neutral density filters must be used to reduce the camera's sensitivity and the long exposure times mean that care must be taken to avoid camera-shake artifacts.
Fuji have produced digital cameras for use in forensic criminology and medicine which have no infrared blocking filter. The first camera, designated the S3 PRO UVIR, also had extended ultraviolet sensitivity (digital sensors are usually less sensitive to UV than to IR). Optimum UV sensitivity requires special lenses, but ordinary lenses usually work well for IR. In 2007, FujiFilm introduced a new version of this camera, based on the Nikon D200/ FujiFilm S5 called the IS Pro, also able to take Nikon lenses. Fuji had earlier introduced a non-SLR infrared camera, the IS-1, a modified version of the FujiFilm FinePix S9100. Unlike the S3 PRO UVIR, the IS-1 does not offer UV sensitivity. FujiFilm restricts the sale of these cameras to professional users with their EULA specifically prohibiting "unethical photographic conduct".
Phase One digital camera backs can be ordered in an infrared modified form.
Remote sensing and thermographic cameras are sensitive to longer wavelengths of infrared (see Infrared spectrum#Commonly used sub-division scheme). They may be multispectral and use a variety of technologies which may not resemble common camera or filter designs. Cameras sensitive to longer infrared wavelengths including those used in infrared astronomy often require cooling to reduce thermally induced dark currents in the sensor (see Dark current (physics)). Lower cost uncooled thermographic digital cameras operate in the Long Wave infrared band (see Thermographic camera#Uncooled infrared detectors). These cameras are generally used for building inspection or preventative maintenance but can be used for artistic pursuits as well.
April 2012
The Netherlands
Candid shots in and around the Public Transport in The Netherlands
Ricoh GRD IV
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Scheveningen/The Hague
June 2012
The Netherlands
Beachlife in the Netherlands
Ricoh GRD IV
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The Sun in smoke from Washington State forest fires obscuring skies in southern Alberta, August 25, 2015. The Sun was dim enough to observe naked eye and throigh binoculars at times. A large sunspot group, #AR2403, was just visible naked eye.
This is a compopsite two exposures taken with no filter: a short exposire (for the Sun disk to show the sunspot) and a longer exposure (for the sky), both taken through a 200mm telephoto lens with 1.4x extender on the Canon 60Da, to replicate the view through binoculars.
Click HERE for another shot of these flowers.
Common chicory (Cichorium intybus), is a bushy perennial herbaceous plant with blue, lavender, or occasionally white flowers. Various varieties are cultivated for salad leaves, chicons (blanched buds), or for roots (var. sativum), which are baked, ground, and used as a coffee substitute and additive. It is also grown as a forage crop for livestock. It lives as a wild plant on roadsides in its native Europe, and in North America and Australia, where it has become naturalized.
Chicory (especially the flower) was used as a treatment in Germany, and is recorded in many books as an ancient German treatment for everyday ailments. It is variously used as a tonic and as a treatment for gallstones, gastro-enteritis, sinus problems and cuts and bruises. (Howard M. 1987). Chicory contains inulin, which may help humans with weight loss, constipation, improving bowel function, and general health. In rats, it may increase calcium absorption and bone mineral density.
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Cykoria podróżnik (Cichorium intybus) – gatunek rośliny należący do rodziny astrowatych. Znany też jako podróżnik błękitny. Rodzimy obszar jego występowania to znaczna część Europy, Azji oraz Algieria i Tunezja w Afryce Północnej, ale rozprzestrzenił się szeroko i obecnie występuje na wszystkich kontynentach z wyjątkiem Antarktydy. Jest także uprawiany w Azji, Europie, Australazji, Afryce i Ameryce Północnej. W polskiej florze jest rośliną pospolicie występującą na całym obszarze. Cykoria podróżnik to roślina lecznicza, korzeń łagodnie pobudza wytwarzanie soku żołądkowego, żółci oraz ma działanie moczopędne. Jest stosowany w wielu mieszankach ziołowych do leczenia zaburzeń trawienia i przy ogólnym osłabieniu. Młode listki cykorii można wiosną dodawać do sałatek, ze względu na zawartość witamin C, B i mikroelementów.
In EXPLORE - 28 July 2006, # 483
The Hague
April 2012
The Netherlands
Urban life in the Netherlands
Ricoh GRD IV
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District 789, Beijing
July 2012
China
Urban life
Canon 550D
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Immense and ancient Ceiba tree shows how little we really are.
"The clearest way into the universe is through a forest wilderness." - John Muir
An appreciated daylight visitor in the garden.
This species possesses good night or scotopic vision. Its eye includes two different kinds of ommatidium; each contains nine light sensitive cells, of which seven contain a pigment whose absorption spectrum peaks in the green part of the spectrum, but in one type the remaining two receptors have peak absorption in the blue and in the other type they have peak reception in the ultra violet. The moth therefore has the cellular prerequisites for trichromatic colour vision. Adults have been shown to be capable of making colour discriminations at night-time levels of illumination, and they sustain these discriminations despite changes in the spectral content of the incident light; that is, they show colour constancy.
This little snapshot is one of my very best. I probably found it at First Monday Trade Days in Canton, Texas, but I can't say for sure. What makes it so special is everybody's absorption in the game. The kids are totally in to make-believe, but "dad"
(uncles are usually good at this kind of thing too) also seems caught up in the action.
I'd make Dad drop his weapon now, if I were one of those two. He's still a tad dangerous as long as he has that pistol in his hand.
The snapshot short-circuits calculation. Chance and accident are crucial to many
(not all) great snapshots. Maybe it's a zen kind of thing.
i remember back in the 80's, was it, when Holiday Inn had that slogan "No Surprises." I guess that was okay for a motel chain, where bad surprises far out-number the good. I've always been willing to take my chances on a bad experience, hoping, and expecting, that if I risk a little, I'll someday, somehow, find the good.
I need a photo for Mr. Waterslide's Monthly Magazine, and this one is as good as any, and far better than most. Hope you like it.
Scheveningen/The Hague
May 2012
The Netherlands
"New" project i will be working on documenting beachlife in the Netherlands
Ricoh GRD IV
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The Hague
March 2012
The Netherlands
The obligatory derelict bike shot..
(can't escape them here in The Netherlands)
Urban life in the Netherlands
Ricoh GRD IV
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For this gentle and relaxing photowalk in my district, Lyon, France, I brought along my French TLR SEMFLEX Standard 3.5 camera (see below for details) loaded with a never-tried yet film Svema FOTO 100 made in Ukraine. The backing paper is black with white numbering and signaling symbols are easy to read across the small red window of my SEMFLEX.
For all the frames, my SEMFLEX was equipped with the original SEMFLEX squared shade hood a SEMFLEX yellow filter x2. The film was exposed for 50 ISO to compensate the light absorption of the yellow filter. Metering was done using a Minolta Autometer III equipped with a 10° finder for selective measures privileging the shadow areas or an opale dome for incident light integration.
View n° 10: 1/100s f/8 focusing @ 50 m, SEMFLEX Yellow filter x2
Rue Bleton (Ecole Providence des Trinitaires), May 10, 2025
69004 Lyon
France
After the view #12 exposed, the film was fully rolled to the taking spool and was developed in a Paterson tank with a spiral adapted to the 120-format film. 500 mL of Adox Adonal (Agfa Rodinal) developer were prepared at the dilution 1+25 and the film processed for 7 min at 20°C. The first view was shifted by about two frames leading to only 10 views on the film. This is clearly due to a quality problem. The backing paper was improperly positioned during the spooling of the film.
Digitizing of the remaining 10 frames, was made using a Sony A7 camera (ILCE-7, 24MP) held on a Minolta vertical macro stative device and adapted to a Minolta MD Macro lens 1:3.5 f=50mm. The light source was a LED panel (approx. 4x5') CineStill Cine-lite fitted with film holder "Lobster" to maintain flat the 70mm films.
The RAW files obtained were inverted within LR and edited to the final jpeg pictures without intermediate file. They are presented either as printed files with frame or the full size JPEG together with some documentary smartphone pictures..
About the camera and lenses :
My French Semflex TLR year 1959-1960 is equipped with triplet 1/3.5 f=75mm SOM Berthiot lenses as descripted bellow.
The SEM company ("Société des Etablissements Modernes de Mécanique") was founded in France by Paul Royet in 1946, in the small city of Aurec near Saint-Etienne (Loire). The SEM camera's was known essentially for the TLR Semflex that were a great commercial success in France until the 70's. The camera's are constructed around an injected aluminum alloy chassis, very resistant and rigid permitting precise optical alignments. The focusing mechanism is made of a cam system like the Rolleiflex giving an accurate and smooth focusing. SEM constructed their own shutters called Orec with 5 leaves capable of the 1/400s to 1s with B.
Semflex received in majority French optics Berthiot with 3 or 4 lenses (Tessar type). Some camera's were also mounted with Angénieux lenses.
Semflex were trusted TLR camera's used by amateurs and for professional purposes. From 1949 to 1976, 171.000 Semflex were produced in many different types and versions.
My Semflex in a middle grade version Standard 3.5 type-10 (1959-1960). It was the last version mounted with the 3-lens SOM Berthiot 1:3.5 f=75mm. I got the camera with set of accessories and several documents including the user manual of the Semflex Standard 4.5 versions. The accessories include a leather SEM ever-ready bag, a Semflex push-on shade hood, a Semflex push-on yellow filter x2 in its original box, and close-focusing lenses. The 1D one is constructed with a prism for the finder lens that compensates the parallax in the zone 1m to 0.5m.
The decorative ring around each lenses can also receive push-on accessories in 36mm diameter as the FOCA or Leitz 36mm filter series. I adapted two protective lens caps from Kodak film canister snapped covers.
The Hague
June 2012
The Netherlands
Candid shots in and around the Public Transport in The Netherlands
Ricoh GRD IV
Please do not reproduce or use this picture without my explicit permission.
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The ploughing here was done a part of a ploughing match at Woodmancott in 1983.
Ploughing prepares land for crop-growing. In each pass across a field, the plough cuts out a slice of earth and turns it over.
This has the effect of burying weeds, aerating the soil and easing the absorption of surface moisture. After a period of weathering, which helps to break down heavy clods into a more crumbly texture, the land can be harrowed to produce an even seed bed. Essential features of the plough have remained the same since medieval times: a horizontal beam to which is attached a ploughshare and knife coulter to cut the furrow slice, and a mouldboard to turn it over. Improvements in design and efficiency evolved over the centuries but quickened in pace from the Victorian period. Regional variations in the type of plough used were once very marked, but gradually faded in the later nineteenth century as manufacture became concentrated upon fewer large firms rather than local craftsmen. As horses were replaced by tractors with specially designed implements, the process of ploughing has progressively speeded up so that it can now be completed much more quickly and with fewer people.
Ploughs are traditionally drawn by working animals such as horses or cattle, but in modern times may be drawn by tractors. A plough may be made of wood, iron, or steel. It has been a basic instrument for most of recorded history, and represents one of the major advances in agriculture.
Ploughs were initially human powered, but the process became considerably more efficient once animals were pressed into service. The first animal powered ploughs were undoubtedly pulled by oxen, and later in many areas by horses (generally draught horses) and mules, although various other animals have been used for this purpose. In industrialised countries, the first mechanical means of pulling a plough were steam-powered (ploughing engines or steam tractors), but these were gradually superseded by internal-combustion-powered tractors.
Draught horses or dray horses (from the Old English dragan meaning to draw or haul), less often called a work horses or heavy horses, are a large horse bred for hard heavy tasks such as ploughing and farm labor. There are a number of breeds, with varying characteristics but all share common traits of strength, patience, and a docile temperament which made them indispensable to generations of pre-industrial farmers.
Draft horses and draft crossbreds are versatile breeds used today for a multitude of purposes, including farming, draft horse showing, logging, recreation, and other uses. They are also commonly used for crossbreeding, especially to light riding breeds such as the Thoroughbred for the purpose of creating sport horses. While most draft horses are used for driving, they can be ridden and some of the lighter draft breeds are capable performers under saddle.
These Shire horses are a breed that comes in many colours, including black, bay and grey. They are a tall breed, with mares standing 16 hands (64 inches, 163 cm) and over and stallions standing 17 hands (68 inches, 173 cm) and over. The breed has an enormous capacity for weight pulling, and Shires have held the world records for both largest overall horse and tallest horse at various times. Throughout its history, the breed has been popular for pulling brewery wagons delivering ale to customers. This practice continues today, with the breed also being used for forestry, leisure and promotional pursuits.
In 1878, the British organization now known as the Shire Horse Society was created, with the American Shire Horse Association beginning in 1885. The breed was exported from Britain to the United States in large numbers during the late 19th and early 20th centuries, but popularity fell as mechanisation increased, reaching a low point in the 1950s and 60s. Popularity began to increase again in the 1970s and after. However, population numbers are still considered to be at critical levels by both the UK-based Rare Breeds Survival Trust and the US-based American Livestock Breeds Conservancy.
Horse power was still widespread on UK farms at the start of World War 2
www.reading.ac.uk/merl/interface/advanced/farming/impleme...
en.wikipedia.org/wiki/Draft_horse
Dalishan, Beijing
Juli 2012
The story: www.flickr.com/photos/d44n/7982253921/in/photostream/
The news: www.globaltimes.cn/content/720568.shtml
Canon 550D
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Title: Technicians performing AA5 (sic) (Atomic Absorption Spectrophotometer) sample analysis, Varian Techtron, 679 Springvale Road, Mulgrave
Author / Creator: Sievers, Wolfgang, 1913-2007 photographer.
Date: 1968.
Varian Techtron was the result of a merger between the Australian company Techtron and the American firm Varian Associates in 1967. The Springvale Road site (then in Springvale North, but now in Mulgrave) was established by Techtron and is still in use, but now as Agilent Technologies (which acquired Varian in 2009). Techtron Appliances was established in 1938 and it and its successor companies have produced a variety of electronic and analytic equipment for industry and scientific research, notably including Atomic Absorption Spectrophotometers (AAS) to CSIRO specifications.
See locale on Google Maps.
Subjects:
Varian Techtron Employees.
Atomic absorption spectroscopy Instruments.
Laboratory technicians.
Laboratories Victoria Mulgrave.
Gelatin silver prints.
Index terms:
Australia; Victoria; Wolfgang Sievers; Atomic absorption spectroscopy; Mulgrave; laboratory technicians; Varian Techrton
Notes:
Job number inscribed in pencil on reverse of image: 4014 G
Vintage print with the photographer's studio stamp on reverse.
Title taken from information supplied by Varian Australia, courtesy of the photographer.
Printed by Wolfgang Sievers at an unknown date from his negative made in 1968.
Copyright status: This work is in copyright
Conditions of use: Copyright restrictions apply.
For Copyright queries, please contact the National Library of Australia.
Source: SLV
Identifier(s): Accession no: H2000.195/225
Source / Donor: Purchased 2000.
Series / Collection: Wolfgang Sievers collection.
Link to online item:
handle.slv.vic.gov.au/10381/308700
Link to this record:
search.slv.vic.gov.au/permalink/f/1fe7t3h/SLV_ROSETTAIE18...
search.slv.vic.gov.au/permalink/f/1fe7t3h/SLV_VOYAGER1757334
Beijing
July 2012
China
Urban life
Ricoh GRD IV
Please do not reproduce or use this picture without my explicit permission.
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wearandcheer.com/time-start-getting-fiber-diet/
There are abundance of reasons you require further fiber in your diet. Fiber might be amazing your mom or grandma rants plus raves concerning, but receiving enough fiber in your diet is really significant for everybody. Fiber aids the body in many ways ranging from cardiovascular fitness, d...
by Staff Author on Wear and Cheer - Fashion, Lifestyle, Cooking and Celebrities - Visit Now wearandcheer.com/time-start-getting-fiber-diet/
You must like it and share it with your friends.
Beijing
July 2012
China
Urban life
Canon 550D
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Sanlitun, Beijing
July 2012
China
The Village in the Sanlitun district is Beijing's capitalistic shrine, a temple for the young, the rich and the affluent. It houses most modern western brands and even features an Apple store, A Starbucks and of course a Mac-D. I don't know whether to love or hate it, its certainly an interesting place to walk around and a great place for photography
Urban life
Ricoh GRD IV
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As the Sun shines down on our clear or cloudy planet, its light is processed and changed as a result of the interaction with the clear air and watery clouds.
Gazing up at the sky, we might wonder how the blues, greys and whites arise.
This plot of the visible spectrum illustrates the three different sources of light that we can see in the daytime:
1. The direct sunlight that paints the shadows.
2. The blue sky, changing in brightness and saturation as we sweep the horizon and the space above our heads.
3. The hugely varied colours of the clouds ranging from the puffy cotton-wool — the definition of 'white' — through all the tinted greys to the lowering, sickly grey-green beneath a towering thunderstorm.
The incoming sunlight outside our atmosphere is represented by the pale grey line spectrum at the top, peaking at a little more than two of the units of power. The complex smattering of dips in the light are the absorption of the radiation in the atmosphere of the Sun as it emerges into space.
These dips are commonly known as 'Fraunhofer lines' after the Bavarian physicist Joseph von Fraunhofer ( en.wikipedia.org/wiki/Joseph_von_Fraunhofer ) whose historic workplaces I used to haunt when I lived within his landscape in and around Munich. The process of understanding the origin of these spectral features over the last couple of centuries has taught us a very substantial fraction of what we know about the Universe.
As the sunlight enters our atmosphere, a fraction of the light is removed from the incoming beam to be diverted into the air and the particles of water and 'dust' that exist within it. Some of this light is scattered — bounced from a molecule or a particle — to continue in another direction and reach the ground as skylight, and some is removed by a process of absorption to become the heat that warms the air.
It is these processes of scattering and absorption that determine the colours of the sky and the clouds while also changing the colour of the Sun as seen from the ground. The combination of these two effects is known as atmospheric extinction.
The thin, continuous orange and blue lines in the plot
(labelled Sun for overcast and blue sky) show the sunlight that would reach the ground through a normal clear (blue) sky with the sun at altitudes of 31° and 40° respectively.
The model I use to compute these spectra includes the scattering of light by air molecules (predominantly nitrogen) and by aerosols (tiny water droplets and dust particles). The only true absorption process it includes is from ozone gas which acts as a rather weak — when the Sun is well above the horizon — blue filter. Ozone has a much bigger role to play at twilight!
In a clear sky, much of the light diverted from the incoming sunlight ends up as the 'blue sky' since the dominant scattering process from air molecules (Rayleigh scattering) strongly favours blue light over the longer wavelengths. The zenith (directly overhead) skylight resulting from the 40° high sun results in the spectrum plotted as the thick continuous blue line (Blue sky, zenith).
The colour of this can be represented as a Coordinated Colour Temperature (CCT) of 25,730K which is represented by the Planck curve shown as the dashed blue line. [An LED light bulb in your sitting room probably has a CCT of around 3000K].
The patch of blue sky that I measured is a lot fainter than the Sun of course and here I have scaled it up by a factor of 155 to match the sunlight at a wavelength of 460nm.
In a heavy, complete overcast, the light reaching the ground traverses a thick layer of cloud. What does this do to its colour? Inside the cloud, the light is scattered, not only by air molecules, but by water drops of a large range of sizes along with dust, pollen grains, salt crystals and all sorts of other stuff, sometimes including volcanic ash. Some of, but by no means all, these interactions result in absorption and conversion into heat, i.e., the light is lost. Also, clouds, that appear white from above, reflect a lot of sunlight back into space.
You can see that this process can be quite complicated and hard to model in detail. The particulate matter outside of clouds, called aerosols, are usually modelled in a simple fashion to produce a scattering that, while preferentially somewhat blue, is not nearly as blue as the Rayleigh process. Consequently, an aerosol-rich but non-cloudy atmosphere appears less saturated and 'milky' in appearance.
Within the clouds, where water drops exist in much larger sizes, the scattering process becomes less coloured and is usually considered to be grey, meaning that the light emerging from a cloud varies in brightness depending on the direction from which it is viewed, but is changed little in hue.
The light measured under a heavy overcast with illumination from the sunlight represented by the thin orange line is shown as the thick dark-red line (Overcast sky, zenith). This is characterised by a CCT of only 6,635K, slightly hotter that sunlight but considerably cooler than the blue sky.
This is a lot fainter than the blue sky (by a factor of about 14) and I have scaled it up in the plot by a factor of 2,232.
The simplest way to think about the colour of this overcast light is to consider the way the cloud layer is illuminated from above. It is receiving the direct sunlight (thin orange line) but also light from the entire hemisphere of blue sky. The light in the cloud retains no memory of its original direction and both sources get mixed together as they diffuse within it. When a fraction of this emerges from the cloud base it will be much dimmer but significantly bluer than the Sun would appear without the clouds. In fact it is quite similar to the colour the Sun would appear in space to an astronaut.
In fact, this in not so surprising since it consists of the sum of the sunlight that has been reddened by extinction and the blue sky that resulted from the major contributor to the reddening process. That is, the red and the blue components have been remixed within the clouds.
Satisfying though this idea appears, it is only a very approximate picture of what happens and the light emerging from clouds under different conditions does vary somewhat in colour (see the comment below for an example image).
There are two other significant effects that are apparent in these plots.
The first is the presence of strong absorption dips, especially towards the red end of the spectrum where there are broad absorption bands that are not included in my extinction model, notably around 590, 690, 730 and 760nm. These are due to absorption in the Earth's atmosphere by molecules of oxygen and water. These are known as 'telluric' bands and they are valuable diagnostics of the state of the atmosphere used by meteorologists and planetary scientists. The stronger ones are, however, too deep in the red to have much effect on the perceived colour.
Secondly, it is clear from the spectrum of the overcast sky (thick dark red line) that the intensity increases dramatically above about 720nm. This is not apparent at all in the solar spectra and it is perhaps only weakly present on the blue sky spectrum.
It is due to radiation from the ground reflecting from the cloud base. Green vegetation has a very high reflectivity in the near infrared arising from the very high transparency of chlorophyll at these wavelengths. Plant leaves appear green to us. However, if our visual sensitivity extended even quite modestly towards redder wavelengths, the vegetated landscape would appear a brilliant red, and very much brighter than the dim green reflection that we actually see. If there is a high fraction of green, vegetated ground cover under the cloud, this deep red reflection can become very strong.
This marked increase in reflectivity is known in the trade as 'the chlorophyll red-edge' and it will be a crucial tool in investigating the presence of life on other planets. The signature of the Amazon rainforest has already been detected on Earth from distant spacecraft looking back at our home planet.
Understanding the appearance of the sky in daylight is fascinating, however as evening twilight approaches, the palette of colours grows in richness. It becomes an increasingly saturated spectrum from a red sunset through a range in the sky from orange, yellow, apple-green and a pale and deepening blue to to reach a strange 'metallic' grey-purple in the Earth-shadow above the eastern horizon. How this happens forms a richer and more complex story.
The Hague
June 2012
The Netherlands
Urban life in the Netherlands
Ricoh GRD IV
Please do not reproduce or use this picture without my explicit permission.
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Following the absorption of Fylde Borough's Blue Bus Fleet, this Atlantean has been painted into Blackpool Transport livery.
BTS depot yard, 6th July 1999
Had a pair of broadband diffuser/absorption acoustic panels built. Combined with a set of heavy, lined velvet curtains to cover the big glass doors out to the deck, the improvement in room sonics is incredible.
Scheveningen/The Hague
March 2012
My girl and her brother at the beach on the first really sunny spring-day of this year
Beachlife in and around Scheveningen
Ricoh GRD IV
Please do not reproduce or use this picture without my explicit permission.
If you ask nicely i will probably say yes, just ask me first!
All rights reserved
Jumping spiders have very good vision centered in their anterior median eyes (AME). Their eyes are able to create a focused image on the retina, which has up to four layers of receptor cells in it (Harland & Jackson, 2000). Physiological experiments have shown that they may have up to four different kinds of receptor cells, with different absorption spectra, giving them the possibility of up to tetrachromatic color vision, with sensitivity extending into the ultraviolet range. It seems that all salticids, regardless of whether they have two, three, or four kinds of color receptors, are highly sensitive to UV light (Peaslee & Wilson, 1989). Some species (for example, Cosmophasis umbratica) are highly dimorphic in the UV spectrum, suggesting a role in sexual signaling (Lim & Li, 2005). Color discrimination has been demonstrated in behavioral experiments.
The principal eyes have high resolution (11 min. visual angle) [1], but the field of vision is narrow, from 2 to 5 degrees.
The absorption of the ancient kingdom of Strathclyde into the new kingdom of Scotland was a gradual process, with the Scots heir apparent often acting as ruler of Strathclyde. When Malcolm II died in 1034, his grandson, Duncan of Strathclyde ascended the throne as King Duncan I (only to be killed in battle by MacBeth in 1040). In 1113, Prince David, later King David I, governed southern Scotland, including Strathclyde, while his elder brother, Alexander I, ruled as King of Scots. Quite what purpose Dumbarton served during this time, is not known, but eventually, owing to a new threat in the west, it must have become necessary to fortify it again.
The new threat came about because in 1098, King Edgar was forced to concede Argyll and the Hebrides to the King of Norway, which meant that Dumbarton was only ten miles from the Norwegian border! While this would suggest Dumbarton was re-fortified, there is no mention of a stronghold until 1222, when King Alexander II's foundation charter for the burgh of Dumbarton mentions the 'new castle' here.
By this date, relations between Scotland and Norway were extremely strained. Alexander had recently led an expedition into Argyll to try to reclaim it. Haakon IV of Norway retaliated in 1230 by sending a fleet into the Clyde. Haakon himself led another armada in 1263, which ended in tactical stalemate (but strategic Scottish victory) at the Battle of Largs. Three years later, Haakon's successor King Magnus, and Alexander III of Scotland, signed the Treaty of Perth, that returned the Hebrides to Scotland. Dumbarton was a frontier post no more.