I wandered into a now little-used portion of my hard drive and realized that I'm done with the physics GRE and can delete the four example tests! Yeah!
One of my difficult subjects is E&M (probably cause I never took the undergraduate class in it). A new arXiv preprint shows how to write Maxwell's equations using geometric algebra, one of my favorite math tools:
$$\Box F = c \mu_0 J$$
http://arxiv.org/abs/1010.4947
There. Much simpler. Now I can do E&M problems like a champ.
Bring the qualifying exams on!
So glad I don't have to take the Physics GRE again.
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