We finish the chapter on The Great Conservation Principles, and move on to Symmetry in Physical Law. We understand what it means for an object to have symmetry, but what about a mathematical expression of a physical law? This chapter is full of interesting concepts, delivered in Feynman's unique style as always. We discuss relativity, lightspeed, gravitational lensing, angular momentum, and how to tell an alien the difference between "right" and "left".   Find the full playlist of the lectures on YouTube here: https://www.youtube.com/playlist?list=PLez3PPtnpncQLg_H7f6T9yJmJ2aCIBUHS Get the book here: https://www.amazon.com/Character-Physical-Law-MIT-Press/dp/0262533413   Support the podcast through Patreon and get extra content here: https://www.patreon.com/brothersoftheserpent Get the new Fifty Dollar Dynasty album, Precession, here: https://fiftydollardynasty.com/ Support the band through their Patreon and get extra content here: https://www.patreon.com/fiftydollardynasty

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