simulates a particle-detection chamber, the device used by researchers into the fundamental properties of matter. The heart of the program is the simulated particle chamber, which appears on the computer screen in a three-dimensional perspective. Particle decay events appear in the chamber as charged-particle tracks, curved by the chamber's simulated magnetic field. Color is used to distinguish the tracks of different particles.
You can rotate the chamber and replay the event in slow motion. You can measure tracks in the projection views and use equations to determine the mass of the injected particle.