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Dive into the fascinating physics behind how two colliding blocks can compute the value of pi in this 28-minute educational video from 3Blue1Brown. Explore the mathematical phenomenon first described in Gregory Galperin's paper as the video recaps the surprising connection between block collisions and pi, then follows a clear game plan to analyze the physics involved. Learn about momentum conservation, elastic collisions, and how to visualize the problem geometrically. The explanation includes small angle approximations and concludes with reflections on the value of pure mathematical puzzles. The video features custom animations created with the manim Python library and includes timestamps for easy navigation through different sections, from the introduction to the final philosophical thoughts on mathematical exploration.
