I can never remember physics formulae off the top of my head, so when I had to take a
departmental PhD candidacy exam I decided to make a condensed two-page formula sheet.
It's heavily skewed toward Statistical & Thermal Physics and Quantum Mechanics (my favourite), and skimps on Electromagnetism (my, uhh, not as favourite). I also have a sheet specific to Quantum Mechanics with slightly clearer labels below.
Please send questions or comments to . Or, even better, send an updated, improved pdf ☺.