Can be used to demonstrate ideal gas laws. PowerCalc - Bicycle Physics Software Estimate a riders power and calorific requirements, taking into account wind resistance, rolling resistance, transmission losses etc. Also, GearCalc Raytrace A raytracing program written for teachers of geometrical optics and optical designers who want a quick tool for checking out their ideas. Reltran Designed to be used by high school students. It includes, among others, calculations of wheel's diameters and number of teeth.
Superposition Allows students to investigate the superposition of two transverse traveling waves.