I took the physics GRE for practice at the end of my junior year. I did ok (840) but I'm trying to do better. I got my butt handed to me by the optics questions. What is a good way to study for the optics questions that will be on the GRE? (my school hasn't offered a full course in optics in 10+ years) Is there anywhere I can find a really concise, comprehensive list of all the formulas I'm going to need to memorize (thin film diffraction, double slit, etc.)?