# I really need help with spin quantum number.

1. Aug 7, 2009

### Sunny09

Hello. I am in class eleventh. I met a class 12th guy telling me that he knew a theoretical proof for showing that the values of spin quantum number are +1/2 and -1/2.
If anyone else knows the proof, please tell me....I'm desperate to know..
Any help would be appreciated.

2. Aug 7, 2009

### GPPaille

The spin of a particle can be $$\pm \frac{n}{2}$$ where n is an integer. This is a long algebraic/physical proof. Does he really know what he is talking about?

Last edited: Aug 7, 2009