Four dimensional turning cube
The movie shows the stereographic projection of a rotating four dimensional cube onto a three dimensional hyperplane. Imagine the cube as a wire frame in three dimensions. The picture you see on the screen is an additional projection onto a two-dimensional plane. See the raytraced Povray version (280 KBytes) .

©, 1999
This movie was generated within Mathematica Povray under the Linux operating system. The gif file was optimized on a Macintosh .