To start learning for free, and to be among the first 200 people to sign up to get 20% off your subscription, check out: https://brilliant.org/kurtis Huge thanks to the University of Puget Sound for their help in making this video possible. Here is a look behind the scenes for this video: https://www.youtube.com/watch?v=MkgOw1ncT-E Foucault Pendulums probably are my favourite science experiment - how amazing is it that someone figured out how to watch the world turn just by watching a pendulum for a long time?