PhET is an application designed to help people better visualize and understand some basic concepts in the world of physics. The program name stands for physics education technology. The application includes a dozen different physics experiments that users can tinker with at will. These include things like a cannon to show the workings of parabolas or gravity and a set of virtual hanging weights to explore mass and weight. Users can adjust certain properties such as the angle of the cannon before firing or the mass of dangling weights. PhET is intended to be a fun educational tool for anyone who wants to have a better understanding of physics.