# Link between momentum transfer and distance

1. Feb 8, 2010

### Derivator

hi folks,

https://www.physicsforums.com/showpost.php?p=992445&postcount=11"

I was wondering why this distance of interaction is smaller at higher momentum transfers.

Could anyone explaine the link between momentum transfer and distance?

Best,
derivator

Last edited by a moderator: Apr 24, 2017
2. Feb 8, 2010

### Norman

Basically from the uncertainty principle:

$$\Delta x \approx \hbar/q$$

where q is the momentum transfer - there may be a factor of 2 missing- that is why I put approx. This should give some measure of the average distance of interaction.