Bletchley Codebreakers and Japan

Bletchley ParkYou probably know the story of the codebreakers of Bletchley, whose top secret work to decipher the Enigma system the Germans used to encrypt their wartime communications did so much to help the Allies win the war, and which also laid the foundations for modern computing. Bletchley Park, the country estate where they worked, is open to the public and has been given a major upgrade, so I joined some Twitter friends for a look. Continue reading

Measuring Time at the Science Museum

Science Museum clock faceTime moves at the same speed wherever you are, doesn’t it? Well, not if Einstein’s theory of relativity is right. And maybe not if you measure it differently. There’s a fascinating free exhibition at the Science Museum about the many ways in which we’ve measured time over the years, starting with hourglasses and sundials and moving on through the very first clocks to the digital world of the present day. And guess what? One of the things it explains is how in Japan they used to measure time in a totally different way. Continue reading