How thick is a three-sided coin?

Go check out the puzzles over on Brilliant! Use the URL above to help support this video and get 20% off the paid premium versions. Once you’ve done that: help us calculate the thickness of a three-sided coin! The bonus video explains how you can get involved. We expanded the audience participation aspect loads after we filmed the main video; which is why a whole second video was required. All the links for the various resources are over here. Here is the form to sign-up and ask nicely to borrow Hugh’s coins. Buy or print your own cylindrical coins. Report your data back to us. And if you are really bored, here is over an hour of Hugh and I flipping coins. Look, it was late at night.