What is this relation called?

[pivoxa15]

.5m<v^2>=(f/2)kT

f is the no. of degrees of freedom.

 

[vanesch]

I think it is called the equipartition theorem.

 

[Mentz114]

Yes, the equipartition theorem is stated thus

'the average kinetic energy per degree of freedom is 1/2kT'