# Discrete simulation of a hard sphere gas Elastically colliding hard spheres are a simple but practical model for gas kinetics. Using a simulation of this model one can see how the velocity distribution of such a gas tends towards a Maxwell-Boltzmann equilibrium distribution. [![Video of 3D hard sphere gas](https://static.kummerlaender.eu/media/boltzgas_3d_teaser.jpg)](https://www.youtube.com/watch?v=C_nYJtAsF2Y) [![Video of 2D hard sphere gas](https://static.kummerlaender.eu/media/boltzgas_2d_teaser.jpg)](https://www.youtube.com/watch?v=ITJ1j78k1eM)