, mercury droplets on cylinders, and light propagation in prisms with variable refractive indices Physoly Archive:

If you can find (and survive) these PDFs, you can solve almost anything.

: Widely considered the "bible" for Olympiad prep. A full English translation is available on Fizik Olimpiyatlari . Collected Problems in Physics (S. Kozel)

Physics Olympiad problems from Russia differ significantly from standard textbook exercises found in many Western curricula. They are characterized by: