Tags » history

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  A visit to the Crossness pumping station

  Pictures from my recent visit to Crossness, a Victorian pumping station for London’s sewers.

• What is psephology?

  It’s the scientific study of elections and voting, and it comes from the Greek word for “pebble”, because pebbles were used for voting in ancient Greece.

• Illustrating the cipher wheels of a Lorenz machine

  Some old code I wrote to draw cam-accurate illustrations of cipher wheels.

• Why do programming languages have a main() function?

  Lots of programming languages have a function called main() where code starts executing. Where does this come from?

• The Sachsenhausen concentration camp

  Feeling the weight of death in a former concentration camp.

• My favourite WITCH story

  As the WITCH computer celebrates five years since its reboot at TNMoC, a fun story of how it was left to run at Christmas.