Lord Bragg of Wigton, a former pupil of the school, has a great interest in Physics and has done a lot to promote Physics through his Radio 4 programmes. I've posted about his book "On Giants' Shoulders" before. You can borrow it from Wigton library.
This week, Melvyn Bragg's In Our Times programme has been about Crystallography. This is basically when you fire X-rays at the atoms in a crystal. The gaps between the atoms act like slits so the the X-rays spread and interfere with each other as they pass. The complicated pattern that you get can be interpreted to give the structure.
Here's the link to the programme. I think it's valid for a year.
http://www.bbc.co.uk/programmes/b01p0s9s
Two of the key founders of this area of study were William Henry Bragg and his son Lawrence Bragg. William was born at Westward, very close to Wigton. They both won the Nobel Prize for Physics, the only parent/child duo to have done so.