Playing pool with $\pi$ (the number $\pi$ from a billiard point of view)

2003, Volume 8, Number 4, pp. 375-394

Author(s): Galperin G. A.

Counting collisions in a simple dynamical system with two billiard balls can be used to estimate $\pi$ to any accuracy.

Citation: Galperin G. A., Playing pool with $\pi$ (the number $\pi$ from a billiard point of view), Regular and Chaotic Dynamics, 2003, Volume 8, Number 4, pp. 375-394