# #139 — Calculating Digits of Pi with Collisions

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Happy Pi Day! To celebrate I attempt to compute the digits of Pi using the “collisions” method, thanks to 3Blue1Brown for the idea!

Paper by G. Galperin on counting collisions between two billiard balls to estimate pi

Wikipedia page on elastic collisions

Wikipedia page on Euler method

GitHub repo to Pi Day (2019) coding challenges

3Blue1Brown's playlist on estimating Pi from block collisions

Numberphile's video on computing pi from bouncing balls

Archive of the member/patron exclusive Pi Day prep livestream

Live Stream with discussion of Pi Day Collisions code

- Editing
by Mathieu Blanchette

- Animations
by Jason Heglund