Arthur is my new friend.

And a faithful companion, he is:

A particularly overwhelming sentence from my Modern Physics textbook

I was grinding along quite nicely this evening until I met this behemoth:

The (2l+1)-fold degeneracy of the rotational state with angular momentum lħ makes the thermal equilibrium population proportional to (2l + 1)exp[-l(l+1)ħ^2/2IkT].

Duh.