Comment Re:Gas of Atoms (Score 5, Informative) 106
You can have gas made of molecules, a gas of photons, a gas of electrons, etc.
As long as you have a large ensemble of free particles in a given volume you can call it a gas.
GREAT MOMENTS IN HISTORY (#7): April 2, 1751 Issac Newton becomes discouraged when he falls up a flight of stairs.
