## Articles

**David Henwood**discusses the vibrations that can be harnessed by musical instrument makers.

**Geoffrey Grimmett**explains how probability is at the heart of it all.

**Julian Stander**tells us about the increasing role of statistics in interpreting them.

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

**David Henwood**explains the role of mathematics in the design of Hi-Fi loudspeakers.