What: "Atoms are like spinning tops. They have an internal angular momentum J. As most physical quantities, the projection Jz of J along the z-axis is quantized : Jz = M h, where h = h/(2π) and where M is an integer or half-integer, positive or negative."

Writer: Claude Cohen-Tannoudji and Jean Dalibard

LCC:

Where:

Date: Apr 24 2014 2:57 PM