Mike Yates looks at the life and work of wartime code-breaker Alan Turing. Find out what types of numbers we can't count and why there are limits on what can be achieved with Turing machines.

Testing times

  • What's in a name?
  • Disaster
New technology has provided us with some amazing images - satellite images, medical images, even images beamed back from Mars. Julian Stander tells us about the increasing role of statistics in interpreting them.
Coincidences are familiar to us all but what are the so-called laws of chance? From coin tossing to freak weather events, Geoffrey Grimmett explains how probability is at the heart of it all.
In the first of two articles, David Henwood discusses the vibrations that can be harnessed by musical instrument makers.
In his second article, David Henwood explains the role of mathematics in the design of Hi-Fi loudspeakers.

We know there is infinitely many primes, but are there infinitely many twin primes?