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 
- Editingby Mathieu Blanchette 
- Animationsby Jason Heglund