Fred Gylys-Colwell

Rated 3.79(19) — Fred Gylys-Colwell

This educational toy draws regular polytopes in two, three or four dimensions. In three dimensions these are just the five platonic solids. To help visualize these polytopes, it also draws their intersection with a lower dimensional hyperplane.

Rated 4.00(1) — Fred Gylys-Colwell

This application can convert from any physical unit to any compatible unit. For example from feet to meters, or from BTU/in^2 hr to W/cm^2. Given a unit, it will automatically tell you the corresponding unit in the metric system.