The Bloch-Floquet theorem is applicable to certain types of crystals which can control the flow of these particles. Gamma is used to represent one of 
The Bloch-Floquet theorem is applicable to certain types of crystals which can control the flow of these particles. Gamma is used to represent one of these on a Feynman diagram. The term Einstein is used to refer to a mole of them, and the absorption of this gauge boson of electromagnetism must be accompanied by a change of plus or minus 1 in the L quantum number and no change in the spin quantum number. Possessing zero rest mass, for 10 points, identify these particles which can be described as quantized units of light.
The Bloch-Floquet theorem is applicable to certain types of crystals which can control the flow of these particles.
{photon} [accept: {electron} before "{Einstein}"]