# Uncertanity in angular momentum

1. Apr 28, 2006

### photonqau

The uncertanity in two components of angular momentum in quantum mechanics is propotional to the third component. What is the physical picture of this result.

2. Apr 28, 2006

### moon_isb

I think u want to ask that the product of uncertanity in two components of angular momentum is greater then or equals to the average value of the third component. As long as I know. it has got something to do with the commutation relation of two components of agular momentum. I cant imagin any physical picture of this result , but it will be interesting if any one have.