Now, with the launch of our new Big Tent YouTube channel , everyone can engage with these debates online.
The channel includes videos from our sessions so far in London , The Hague, Berlin and Madrid. You can filter by topic, speaker and event, so whether you’re interested in privacy or child safety, Hillary Clinton on Internet freedom or Wael Ghonim on the role of the Internet in Egypt’s revolution, it’s all available under the Big Tent.
The launch of our new channel coincides with our first Big Tent in the US--an event on Digital Citizenship held at the Computer History Museum in Mountain View, California. Over the course of the day, we discussed child safety online, the most effective ways to incorporate technology with educationa and what governments and civil society can do to maintain a responsible and innovative web.
Stay tuned for videos from that and future Big Tents as the programme continues to roll out across the world.
Posted by Peter Barron, Director of External Relations EMEA
Finding solutions to these problems is critical to the future of our society and economy. To debate the issues that surface in the visualisations, we’ll be co-hosting public conversations via Google+ Hangouts that are anchored in hard numbers. Stay tuned to this blog or the Guardian Datastore for details.
The competition is open to U.K. and U.S. citizens with a prize of $2,000 going to the most compelling, beautiful and informed visualisation. Entries are due by May 21 and results will be published on the Guardian Datastore’s new site, Show and Tell.
A new economic reality is setting in, and if we are going to master it, citizens and leaders alike need to invest in figuring out how to adapt. Check out the data from our list or bring your own as long as it’s freely available to the public - and submit your entry to datavisualisation@guardian.co.uk!
Posted by Dorothy Chou, Senior Policy Analyst at Google
For example, you might be interested in Nelson Mandela’s personal memories of the time he was incarcerated and click into the Prison Years exhibit. You can immediately see a curated set of materials threaded together into a broader narrative. These include handwritten notes on his desk calendars, which show, for example, that he met President F.W. De Klerk for the first time on December 13, 1989 for two and a half hours in prison; the Warrants of Committal issued by the Supreme Court which sent him to prison; the earliest known photo of Nelson Mandela’s prison cell on Robben Island circa 1971; and a personal letter written from prison in 1963 to his daughters, Zeni and Zindzi, after their mother was arrested, complete with transcript.
From there, you might want to see all the letters held by the archive, and click “See more” in the letters category, where you can discover all personal letters or use the time filter to explore his diaries and calendars written between 1988 and 1998, where you can see that in the last page of the last diary, he met with President Yoweri Kaguta Museveni of Uganda to exchange ideas about the situation in northern Uganda. If you were a researcher, you can search through various fragments of Madiba’s memory that relate to Ahmed Kathrada, his long-time comrade, politician and anti-apartheid activist, where you can find photos, videos, manuscripts and letters that relate to him.
The Nelson Mandela Digital Archive project is an initiative by the Nelson Mandela Centre of Memory and the Google Cultural Institute, which helps to preserve and promote our diverse cultural and historical heritage. Some of our other initiatives include the Art Project, digitizing the Dead Sea Scrolls and bringing the Yad Vashem Holocaust materials online.
You can start exploring the Nelson Mandela archive right now at archive.nelsonmandela.org. We hope you’ll be inspired by this influential leader—the face of South Africa’s transition to democracy.
Posted by Mark Yoshitake, Product Manager, Google’s Cultural Institute
Photo of Dr. Thomas “Tommy” Flowers. Reproduced with kind permission of the Flowers family
By 1942 the hardest task facing Bletchley Park’s wartime codebreakers was deciphering messages encrypted by Lorenz, used by Germany for their most top-secret communications. Initially Lorenz messages were broken by hand, using ingenious but time-consuming techniques. To speed things up, it was decided to build a machine to automate parts of the decoding process. This part-mechanical, part-electronic device was called Heath Robinson, but although it helped, it was unreliable and still too slow.
Tommy Flowers was an expert in the use of relays and thermionic valves for switching, thanks to his research developing telephone systems. Initially, he was summoned to Bletchley Park to help improve Heath Robinson, but his concerns with its design were so great he came up with an entirely new solution—an electronic machine, later christened Colossus.
When Flowers proposed the idea for Colossus in February 1943, Bletchley Park management feared that, with around 1,600 thermionic valves, it would be unreliable. Drawing on his pre-war research, Flowers was eventually able to persuade them otherwise, with proof that valves were reliable provided the machine they were used in was never turned off. Despite this, however, Bletchley Park’s experts were still skeptical that a new machine could be ready quickly enough and declined to pursue it further.
Fortunately Flowers was undeterred, and convinced the U.K.’s Post Office research centre at Dollis Hill in London to approve the project instead. Working around the clock, and partially funding it out of his own pocket, Flowers and his team completed a prototype Colossus in just 10 months.
Photo of the rebuilt Colossus which you can visit at The National Museum of Computing in the U.K. Reproduced with kind permission of The National Museum of Computing.
The first Colossus came into operation at Bletchley Park in January 1944. It exceeded all expectations and was able to derive many of the Lorenz settings for each message within a few hours, compared to weeks previously. This was followed in June 1944 by a 2,400-valve Mark 2 version which was even more powerful, and which provided vital information to aid the D-Day landings. By the end of the war there were 10 Colossus computers at Bletchley Park working 24/7.
Once war was over, all mention of Colossus was forbidden by the Official Secrets Act. Eight of the machines were dismantled, while the remaining two were sent to London where they purportedly were used for intelligence purposes until 1960. It wasn’t until the 1970’s that Colossus could begin to claim its rightful crown at the forefront of computing history.
Tommy Flowers passed away in 1998, but we were privileged recently to catch up with some on his team who helped build and maintain Colossus.
This week heralds the opening of a new gallery dedicated to Colossus at the U.K.’s National Museum of Computing, based at Bletchley Park. The rebuilt Colossus is on show, and over the coming weeks it will be joined by interactive exhibits and displays. Bletchley Park is less than an hour from Central London, and makes a fitting pilgrimage for anyone interested in computing.
Posted by Lynette Webb, Senior Manager, External Relations
