Two colliding blocks compute pi, here we dig into the physics to explain why
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The original paper by Gregory Galperin:
https://www.maths.tcd.ie/~lebed/Galperin.%20Playing%20pool%20with%20pi.pdf
Adam Brown's paper on the analogy with Grover's Algorithm:
https://arxiv.org/pdf/1912.02207
Here's a lovely interactive built by GitHub user prajwalsouza after watching this video: https://prajwalsouza.github.io/Experiments/Colliding-Blocks.html
Matt Parker's Pi Day video:
https://youtu.be/vlUTlbZT4ig
NY Times blog post about this problem:
https://wordplay.blogs.nytimes.com/2014/03/10/pi/
Timestamps:
0:00 - Intro
0:48 - Recap, the surprise pi
3:58 - The game plan
5:31 - How to analyze the blocks
14:59 - The geometry puzzle
20:05 - Small angle approximations
25:00 - The value of pure puzzles
SEV#7: https://youtu.be/RTCQYcOpmN4
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https://github.com/3b1b/manim
https://github.com/ManimCommunity/manim/
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The music is by Vincent Rubinetti.
https://www.vincentrubinetti.com
https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown
https://open.spotify.com/album/1dVyjwS8FBqXhRunaG5W5u
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