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A live demonstration of the rebuilt Colossus Mk II at Bletchley Park - a reconstruction of the world's first programmable digital electronic computer.
Colossus was designed to help staff at Bletchley Park decrypt messages sent between different parts of the German Army High Command. These had been encrypted using a Lorentz cipher machine - a device more complex than Enigma.
The Bletchley Park codebreakers were able to figure out the behaviour of the Lorentz machine two and a half years before they actually laid their hands on one, thanks to a horrendous mistake made by a German operator sending a message from Athens to Vienna on 30th August 1941. By the beginning of 1942, engineers at the Post Office Research Laboratories at Dollis Hill had produced a device called 'Tunny' that emulated the Lorentz machine's logic. Once cryptographers had worked out the Lorentz machine settings, these could be plugged into Tunny and the ciphertext could be fed in; if all was well, Tunny would produce the plaintext of the message as its output (in German, of course).
The problem was that working out the required Tunny settings by hand took weeks. A first semi-automated solution involved a machine nicknamed 'Heath Robinson' but this was later improved by Post Office electronics engineer Tommy Flowers, who designed and built the Mk I Colossus. This 1,500-valve machine was assembled in Bletchley Park F Block over Christmas 1943 and operated on its first message in January 1944, reducing the time to break the Lorentz cipher from weeks to hours.
Horticulturalist Zac Stayton explains what we believe will happen later today - the section he is gesturing towards will continue to pull out as the flower begins to bloom.
More info on the blog.
Minute by minute updates on Twitter.
Title / Titre :
Mr. Alex Stevenson explaining details of a Bell 47 helicopter from the CGS C.D. Howe to a group of Inuit at Pond Inlet, Northwest Territories /
Monsieur Alex Stevenson, décrivant un hélicoptère Bell 47 du navire C.D. Howe de la Garde côtière canadienne à un groupe d'Inuits de Pond Inlet, Territoires du Nord-Ouest
Creator(s) / Créateur(s) : W. Doucette
Date(s) : 1951
Reference No. / Numéro de référence : MIKAN 3388070, 4097080
collectionscanada.gc.ca/ourl/res.php?url_ver=Z39.88-2004&...
collectionscanada.gc.ca/ourl/res.php?url_ver=Z39.88-2004&...
Location / Lieu : Pond Inlet, Northwest Territories, Canada / Pond Inlet, Territoires du Nord-Ouest, Canada
Credit / Mention de source :
W. Doucette. Canada. National Film Board of Canada. Photothèque. Library and Archives Canada, PA-111208 /
W. Doucette. Canada. Office national du film du Canada. Photothèque. Bibliothèque et Archives Canada, PA-111208
Common Things Explained by Dionysius Lardner 1856.
A childrens' book explaining fire, time, clocks, telescopes etc.
Published by Walton & Maberly, London. Brown gilt cloth boards. 215 pages 18.5cm x 12cm.
Front cover has gilt artifice impression 'Progress - Diffusion'
The shark brought that really expensive bottle of champagne...
We drank all of it, so he went to the store and bought several more....
The last thing I remember we were dancing in the rain.....
We're on our way out for some hangover relief!
I wrote - "the guide explained about this tall wild flower - Coral Pink Sand Dunes southern Utah. I wrote the name down some place. Yup, lost it. Can anyone help with the ID?"
mtndust responded:
Looks like Eriogonum alatum, "Winged Buckwheat". Flowers more usually yellowish, but can be reddish also sometimes, especially as they age. www.wildflower.org/gallery/result.php?id_image=48880"
So grateful for this help.
++ ++ ++ ++ ++
Eriogonum alatum Torr. var. alatum
Winged Buckwheat
Plant Characteristics
Duration: Perennial
Habit: Herb , Subshrub
Root Type: Tap
Fruit Type: Achene
Size Notes: To about 4 feet.
++ ++ ++ ++ ++
image by Photo George
©2008/2019 GCheatle
all rights reserved
locator: 31 _CYN6042
Cambodia suffers from one of the highest rates of child malnutrition in the region and one of the lowest rates of pre-school attendance. In rural areas, few children have access to medical care, adequate nutrition and pre-school education.
However, CCAF’s ‘Village Based Pre-School Programme’ helps to provide Cambodian children living in rural areas with the right to access basic education, free on-site doctor check-ups, nutrition programmes and, in 2009, fruit and vegetable plots were set up at each school.
CCAF’s ‘Village Based Pre-School Programme’ has:
• Established 16 pre-schools,
• Employed 16 local teachers, and
• Provided 413 children with pre-school education
Yet, CCAF is unable to continue this programme without any additional funding which means the pre-school programme may have to close in 2012. As a result, 413 children and their families will be affected and 16 pre-school teachers will be unemployed.
Yet, CCAF is unable to continue this programme without any additional funding which means the pre-school programme may have to close in 2012. As a result, 413 children and their families will be affected and 16 pre-school teachers will be unemployed.
Please help CCAF by making a donation through paypal at - www.paypal-marketing.co.uk/sendmoney/index.htm
To the following email address - jessica.sercombe@gmail.com
For further information and contact details, please go to www.ccaf-khmer.org/.
One Los Angeles Firefighter was injured battling a residential structure fire in Sherman Oaks, California on August 5, 2006. © Photo by Michael Corral
Nith Navigation September 2015
Ships, shanties, burgers and boules:
T’was another early start for most of our intrepid explorers as this week’s adventure took us westwards and upwards to Dumfries and the Nith Navigation Race. Ours was a truly Northumbrian contingent as members of three clubs banded together to crew “Coquet Spirit”. Huge thanks to those good folks who joined us, bringing their energy, enthusiasm (and Tupperware boxes) and helping make this trip happen (hurrah!)
We cheerfully observed the ever darkening skies as we crossed the A69 and we're motivated en route by texts from those crew-mates who had travelled the previous evening, explaining their relaxing morning and full Scottish breakfast in detail (cheers folks!). Rain turned into more rain but we managed to seek solace in the fact we were heading for a marginally lighter shade of grey! (Skiffies are waterproof anyway!) The puddles at the sides of the road raised columns of water as we rattled along the narrow country lanes, the view at times akin to the parting of the red sea. At one point we considered taking the boat off the trailer and rowing along the road itself.
It wasn’t long however before the horizon on the sat nav turned from green to blue and we found ourselves at our destination. Opening the car door and alighting we found we’d parked next to a sign that cheerfully welcomed us with the words “Warning, fast tides and quicksand” (I must admit our hearts leapt a bit with excitement at the tides… and a touch of trepidation at the quicksand)
We quickly dashed across the car park to seek welcome shelter. Here we commented thankfully on the genius of planning a row that started at a café and ended at a pub.
We’d poured into the café at 9.00 only to be told that they didn’t really open for another hour, but the cheerful chap happily agreed to tear up the rule book and furnish us with tea and bacon rolls anyway… it wasn’t however until 10.00 that he put the lights on !!! By this time the room was filling with skiffies and the car park was filling with water as we watched the tide start to hurtle by the windows. Today’s tide wasn’t particularly high (but still a belter by east coast standards) so the anticipated tidal bore wasn’t as dramatic as previously recorded (8 to 10m tides !!!!) .. But there certainly was still some cracking energy in the water. The Cox’s briefing pointed us to the fastest part of the flow and with a wicked grin we were advised to “use this to our advantage”. It was a short drag to the slip where fully-loaded skiffs were pushed down to the water by diesel power and floated off into the current for an energetic row back up to the starting point (against the tide).We chose the "push to the edge and clarty feet" option to save removing electrics etc. Thankfully someone had cleared the silt from the slip so we could tell it apart from the "sinky stuff" Once back up at the starting point, crews had steered themselves into the mud banks to get some purchase before a staged start (partly to avoid clutter and partly because you’d never get boats to stop in that current .. never mind line up!) and with a wave….we were off…….
The first half of the six mile course was ably assisted by the tide, then time to lengthen out the strokes and pick up the pace a touch. Eager heads were cast over shoulders to try and gauge the field in comparison to our relative starting positions as Boatie Blest (starting last) grew from a spec on the horizon to pass us in the last few minutes. For a while we held our own and it was great to race through the bridges together. Before we knew it chequered flags were waived (by Elsie from Gosforth!!) and all crews applauded each other’s efforts as a close field came in one shortly after the other. A quick draw of breath saw the last of the rain pass and skies clear in time for a row in company back down the river. This time we took the opportunity to look at the scenery we’d obviously ignored on the way down. This included a derelict mill building that looked as if it came straight out of an episode of Scooby Doo (Mr Grimes the caretaker would have gotten away with it too if it wasn’t for those meddling skiffs!!).
With the sun out and in clear water we broke into a few “traditional” shanties (artistic license and local flavour applied aplenty as usual!!) before turning and mooring up at Kingholme Quay, alongside tall ship La Malouine. Here boats were admired and oars/footrests/mascots/blisters compared before the “skiff extraction machine” swung into action. At this point chains and strops were secured and lowered over the quay edge and skiffs were lifted from the water, swung around and deftly lowered to their waiting trailers (thanks guys!!). Several fingernails may have been bitten as the first skiff was lifted, but these were quickly forgotten and the clubs all pulled together checking landings, moving trailers and unhooking/re-hooking chains. Here new friendships were made and old ones rekindled … all with the re-assuring squelch of mud underfoot. Rob revisited the “shuggy boats” of our youth as he was lifted to land aboard the final skiff as Geoff and Jenny furnished the masses with pasties and chilli infused scotch eggs from Tupperwares 1 and 2)
With the boats safely on trailers we adjourned to the pub where skiffies of all ages filled the room with hearty chatter. At this point Ian and Elsie broke out Tupperwares 3 and 4 supplying the table with Rocky Road and flapjacks (fruit well soaked) before Roy (our gracious host) announced that food was served and we were treated to a mountain of cracking burgers and sausage buns. All were well and truly stuffed when glasses were "pinged" to herald the announcement that more burgers had arrived… well? It would be rude not to would it ?? Buttons were universally unfastened and attention drawn to the presentations where all crews received a commemorative bottle of whisky featuring the fair Malouine herself (a really nice touch, thanks) and apologies made for lack of planned cheese due to an accident involving the “cheese man” (we all wish him well!!) The final presentation was made to the deserved winners Boatie Blest (hip hip……)
At this point hugs and handshakes are normally exchanged and folks make their way home, however this is not the way of Nith. Seconds later a stranger in a beret carrying a French flag entered from stage left (looking uncannily like our host) and we were marched to the riverside for the first “Coastal Rowing Boules Tournament” a respectful nod to the lineage of the fair ship to our left. The rules were explained, heats were drawn and eager skiffies set about examining the equipment and discussing proposed technique. Watched by an enthusiastic crowd the crews ran through two qualifiers and a final with Troon taking the inaugural title followed by three hearty and well deserved cheers for our hosts and all involved…. (Absolutely cracking way to round off a day)
The sun was now well and truly beaming and we toddled up to the tall ship and were welcomed and offered open access to “climb aboard and take to look”. Here we were regaled with tales of the ship’s chequered history from Icebreaker to party boat in Martinique to the theft of its sails in France and how it ultimately found residence here. We did all but climb the rigging before bidding Roy a fond farewell with a promise to return (any other NE skiffs fancy coming next year and staying over perhaps??)
By now we’re used to these stories extending (brevity is not, I’m afraid, a gift that I posses to any great degree) and today was to be no exception …so we settled back in the beer garden for a quick beverage and the remnants of Tupperwares 1,2,3 and 4 (sounds like the ACRC equivalent of Thunderbirds!!) Conversation was varied and eclectic and shifted from boat and surfboard building through to 18 month sourdough cultures to the absorbency of bread buns and “whims”. As if fate couldn’t have arranged a better day already, a lady from behind the bar came out to our table with an additional beer stating simply that “it was our lucky day”. We responded in the only manner we knew how, tastefully arranging a plate from our respective Tupperwares, taking it into the bar and reciprocating her sentiment word for word….. Happy days indeed!
Farewells were finally exchanged as we recounted the day’s events and were again astounded at what you can fit into 12 hours when you’ve got a skiff, some water and good company…
Huge thanks to all involved.
Right then fellow adventurers……… what’s next ???
Note: Apologies that there are no actual race photos to accompany this …. Maybe someone can help us out?
Motion Graphics video are created for illusion of motion or rotation. It also has a unique audio for use as per the objective of the video.To know more about the videos visit at www.videofactory.in/portfolios/portfolio/motion-graphics/
Explaining the Pedersen (look at it if you don't know what a Pedersen is -- it's a truly odd looking machine). See next three photos to actually read it.
Director Marcelo Mattos Araujo is showing us around in his Pinacoteca do Estado.
Orientatiereis Zuid Amerika.
Ted. Explaining to me how I wasn’t to take his picture, unaware due to the near silent Fuji X-H1 shutter I was shooting already :-) Have I mentioned the IBIS?
(Photos by Karl Weisel)
Wiesbaden MWR's Valerie Cribbs performs a special harp concert at the Wiesbaden Library March 23, 2017.
Art Direction Explained, at last
作者：史蒂芬．海勒、薇若妮卡．魏納
原文作者：STEVEN HELLER、VERONIQUE VIENNE
出版社：三采
出版日期：2011年07月20日
語言：繁體中文
ISBN：9789862295052
裝訂：平裝
Raymond, a volunteer at the Baltimore Museum of Industry, explains how movable type was set. He was very knowledgeable about all facets of the industry. Raymond has worked in the printing business 69 years, starting as an apprentice at age 15, and he is still employed in the field.
Greenpeace flies the A.E. Bates thermal airship over Walmart's world headquarters in Bentonville, Arkansas, June 2, 2016, one day before the company's annual shareholders meeting. Greenpeace is asking the world's largest retailer to stop buying tuna from Thai Union Group to stop ocean destruction and human rights abuses of workers in the global tuna trade.
Note: The attribution specified in the copyright is not required from any person included in this photo.
Lightning Ridge, New South Wales, Australia
I do wish I had more time to get some candid shots and stranger shots at Devils Tower. We were running behind due to waiting on all the family to arrive and since I was not alone, I had to be considerate of others, :-)
My initial sketch for these diagrams. For full article see www.djangopro.com/2011/01/django-database-migration-tool-...
Presenter Ben Fogle explains cricket to NBC's weather anchorman Al Roker
...an outtake from Olympics coverage.
A dairy worker explains the cheese sculpture to Governor Snyder and Rep. Ed McBroom at the UP State Fair in Escanaba
A man explains to me the candidates in the 2010 Sri Lankan Parliamentary elections. Colombo, Sri Lanka
Photo citation: Ted Auch, FracTracker Alliance, 2021. Aerial support provided by LightHawk.
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