Geoff Cottrell was Director of the Culham International Summer School for Plasma Physics from 2006-2011. He is a fellow of the Royal Astronomical Society, and visiting scientist at the Oxford University Astrophysics department and at the Rutherford Appleton Laboratory.
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What is matter? Matter is the stuff from which we and all the things in the world are made. Everything around us-from desks, to books, to our own bodies-are made of atoms, which are small enough that a million of them can fit across the breadth of a human... SEE MORE