This puzzle is based on the board game Wavelength.

The last puzzle written, finalized less than a week before hunt. I wanted to make the physics problems harder (e.g. double-slit interference; photon emitted by hydrogen atom collapsing to a lower energy state), but with less than a week left our testsolving resources were too limited to aim hard.

This interaction ended up taking a long time to run in what was already a hectic HQ, so we shortened the game from 6 rounds to 3 after the first two teams completed it.