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Cylindrical Slide Rule.
When I was about fourteen I remember my maths master bringing in the first electronic calculator I had ever seen. It could do addition, multiplication, division and subtraction and had one memory. It cost around £300 in today’s money. By the end of my undergraduate studies I had a programmable scientific calculator that handled trig functions and statistics and cost only £30.
In the sixth form (i.e. years 12 & 13) we used slide rules and books of tables for calculation as calculators weren’t generally allowed in examinations. The slide rule I had was an advanced one, double-sided with trigonometric, log and exponential functions built in.
In many ways slide rules remain superior to calculators. They are fast, intuitive and less prone to errors of data entry. In experienced hands fairly complicated calculations can be done rapidly. They also make it easier to estimate answers and they teach you to handle the powers of ten in a calculation so that they become second nature. These skills become very important at university in a complex subject like Physics as you need to work out whether you are on the right track quickly when you are working a problem.
All slide rules work on the same principle. You can save doing a multiplication of two numbers by converting the numbers to their logarithms and then adding those together, finally converting back to ordinary numbers. In this way a multiplication becomes a simple addition which is way easier. Slide rules work by converting the log numbers into lengths on the rule and by sliding one bit of rule against another you can add the lengths (literally) and then read back the total length to convert back to the normal numbers.
The main drawback with slide rules is precision. An ordinary slide rule can work to about three significant digits whereas calculators work at eight or more. Of course precision doesn’t buy you much if you have entered the wrong figures into the calculator in the first place.
The precision is determined by the length of the slide rule: they’re normally about a foot long. Any longer and you have problems getting them in your briefcase :)
This is an image of my father’s precision slide rule. It gets around the length problem by spiralling the scale around a cylinder. The cylinder is in three parts that can rotate independently the scales on the top and bottom parts with a sliding sleeve in between. Collapsed down it is about six inches long, but the scale is equivalent to a slide rule about five and a half feet in length!
This is a picture of the top scale and part of the central sleeve, on top of some of the instructions for the device (an Otis King model “L” if you are a detailophile :) ).
I created this for the Macro Mondays Back In The Day theme this week. The exposed area of the scale is 1.3 inches so we are within the limits for the group - yey! Also for 7DWF :)
Thank you for taking time to look. I hope you enjoy the image! Happy Macro Mondays!!
[Indoors with light from window; tripod mount; remote release; focused in LiveView; VR off.
Processed in Lightroom with the colour balance set to accentuate the brown tinge in the instructions paper; exposure and contrast set to create a bit of ambience; rotated to give a stronger diagonal, and cropped.
Into Affinity Photo for some healing of dust spots; sharpened with a bit of Clarity filter and Unsharp Mask; slight, carefully constructed vignette to keep the highlights on the knurling top right, but to draw us in a bit. Then we’re done :)]
2, 2, 2, 2, 2 - 2, 2, 2, 2, 2
10, 8, 6, 4, 2, 0, 2, 4, 6, 8, 10
12, 22, 30, 36, 40 - 42 - 40, 36, 30, 22, 12
Tabgha (Arabic: الطابغة, al-Tabigha; Hebrew: עין שבע, Ein Sheva which means "spring of seven") is an area situated on the north-western shore of the Sea of Galilee in Israel. It is traditionally accepted as the place of the miracle of the multiplication of the loaves and fishes (Mark 6:30–46) and the fourth resurrection appearance of Jesus (John 21:1–24) after his Crucifixion. Between the Late Muslim period and 1948, it was the site of a Palestinian Arab village. source: en.wikipedia.org/wiki/Tabgha
This is an olive tree in the patio of the Church of Multiplication, in Tabgha, on the shore of Sea of Galilee, Israel. Probably, the olive tree is the most beautiful tree in the world.
Tabgha (Arabic: الطابغة, al-Tabigha; Hebrew: עין שבע, Ein Sheva which means "spring of seven") is an area situated on the north-western shore of the Sea of Galilee in Israel. It is traditionally accepted as the place of the miracle of the multiplication of the loaves and fishes (Mark 6:30–46) and the fourth resurrection appearance of Jesus (John 21:1–24) after his Crucifixion. Between the Late Muslim period and 1948, it was the site of a Palestinian Arab village. source: en.wikipedia.org/wiki/Tabgha
GOSPEL Lk 9:11b–17, Corpus Christi-061922
God Provides
In our Gospel from Luke, we learned about the familiar multiplication of the loaves and fishes that fed over five thousand. Before this particular story begins, we read about how the twelve disciples where sent out by Jesus to preach in the surrounding villages. Jesus tells them “Take nothing for your journey, no staff, nor bag, nor bread nor money; and do not have two tunics.” Our Jesus is asking them to rely on their faith in him, to walk empty handed into the mystery of the new ministry without him their teacher-who has been doing this all along. They have just returned to Jesus…they are tired and worn. They have successfully completed what Jesus has asked them to do-and have learned-God provides.
Jesus invites them to leave the city…maybe for some quiet, rest and relaxation, but a massive crowd follows them into a deserted place. The disciples must be thinking how inconvenient. Rather then decompressing with his disciples and out of necessity, Jesus spends his day ministering to the crowd and preaching about the kingdom of God. What must be going through the disciples minds?
As the day turns into evening, the disciples tell Jesus to send the crowd away because it is late and they and the crowds are tired and hungry.
Jesus responds to his the disciples “Give them some food yourselves.” They reply, “Five loaves and two fish are all we have, unless we ourselves go and buy food for all these people.” It appears that they are whining! (The logistics of this moment, calls to my mind what I know we go through feeding and entertaining 150 plus bingo players every other week.)
Jesus gives them not just a teaching moment but a transformative reality. God provides! Jesus maybe satisfying the physical and spiritual hunger of the larger crowds, but more importantly HE is revealing to his disciples a deeper truth…how to do it. What he is asking of his inner circle is to trust God, even when it feels absurd and impossible.
In being a witness to this miracle, their faith in Jesus increased. In the future, they will link this important event with the last supper where the Eucharist is instituted. In the Gospel of John-chapter 6, we read Jesus saying “He who eats my flesh and drinks my blood abides in me and I in him.”
Today, we have many who critique us and our belief in the Eucharist being the actual body and blood of Christ. Whether it be the culture that surrounds us, other Christian denominations or direct family members, we are still here every Sunday to receive the Eucharist. It is not just a symbol as they would like us to believe. Jesus is the bread of life that comes from heaven. He feeds us with this bread. If this bread is not the source and center of all that we do in ministry, we are missing the spiritual food that is necessary to sustain us. It is out of this sacred meal, that Jesus feeds us and strengthen us to do HIS will. The Eucharist binds and unifies us as the Body of Christ.
We are also disciples, in modern terms, it means we accept Jesus as our leader, and we assist HIM in spreading the Good News. Being a disciple of Jesus means the ministry and work is never done. The world needs what we the body of Christ offers. Even when we have doubts and discouragement, we must never forget, God provides.
Jesus is always teaching and forming us-especially in our liturgical worship.
We participate fully in this work when we offer up our hearts, which includes our hopes, joys, pains and sorrow. The 12 disciples, with all their conflicted feelings, leaned into this teaching moment, and participated fully in it. “He must increase and I must decrease.” Not my will, but your will be done!
We are transformed when we receive the Christ in the Mass. We become what we eat. The work of Jesus Christ gets multiplied in us as we carry him out into a spiritually starving world. The crowds that surrounds us are depending on us…just remember God provides.
LA LINEA - PERSPECTIVE #86
MAGASIN DE LUXE, TOUT Y EST SOIGNEUSEMENT ALIGNÉ.
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LUXURY SHOP, WHERE EVERYTHING IS CAREFULLY ALIGNED.
Tabgha (Arabic: الطابغة, al-Tabigha; Hebrew: עין שבע, Ein Sheva which means "spring of seven") is an area situated on the north-western shore of the Sea of Galilee in Israel. It is traditionally accepted as the place of the miracle of the multiplication of the loaves and fishes (Mark 6:30–46) and the fourth resurrection appearance of Jesus (John 21:1–24) after his Crucifixion. Between the Late Muslim period and 1948, it was the site of a Palestinian Arab village. source: en.wikipedia.org/wiki/Tabgha
2016.02.26 Tabgha, Israel.
The Bread and Fish Church.The Church of Multiplication. This church marks that area where Jesus fed 5,000 people with only a handful of fish and bread loaves.
A new study done at the Saint Louis University scientists showed that bitter melon extract triggers a chain of events on a cellular level which inhibit the multiplication of breast cancer cells and destroys them at the same time.
The lead researcher stated that “bitter melon extract modulates several signal transduction pathways, which induces breast cancer cell death. This extract can be utilized as a dietary supplement for the prevention of breast cancer.”
This beneficial fruit may be consumed raw, added to your favorite smoothies, or drank as a drink. You can also take the bitter melon extract, which can be purchased as a herbal supplement in healthy food stores.
My little one started learning multiplication last week at school. I like her (also all the children) learning Maths with FUN, living with Nature.
of unnecessary necessities :-) Mark Twain
HGGT!!
grand tetons and jackson lake, from signal mountain, wyoming
Arghhh. I'm not sure if I like this or not, but i was looking through my 365s (vain, i know) and i realized it's of my face/ full body. I've seen other people's 365s and they have photos of just their hands, legs etc. so i decided to try it myself.
Comments and suggestions welcome :)
Alright, unknown thing about me #6:
I am Russian. Many people don't think that I'm Russian but I am! I can speak the language quite fluently as well.
Alright, enjoy the photo
#349
My daughter didn't believe it is the same me in the picture. After explaining that I can also make 2 or 3 of her to appear in photograph, she replied: "You'd better make 100 of me".
Camera: can from fishing corn, pinhole 0.23 mm
Paper: Ilford Ilfospeed 1.1M, 5 cm in diameter
Exposure: 2+2 min, sunny, 2018-09-02
Developer: D-76 1:1
Scanner: CanoScan 9950f