Pretty big napkin...
Of course, when you've worked out each energy level, you have to input each one into the Van Vleck-Dirac-Heisenberg equation to calculate the susceptibility.
which is just what I was saying to the vicar the other day...
(
Colonel Boris "...a desperate Buzzfeed imitation...",
Mon 25 Feb 2008, 20:05,
archived)
Sounds like you have a rather enjoyable evening ahead of you.
(
my other username is a porsche , posting shit pictures so you don't have to,
Mon 25 Feb 2008, 20:08,
archived)