Science

A discussion of rotation, levitation, wheels, and bodies of water. Classification of "rotatopes" (cubes, spheres, and cylinders), and a Java applet to visualize projections and intersections of the shapes. Includes book reviews, a glossary, links, and a forum.

Tutorial which aims to give readers an understanding of the fourth dimension by having them use a java applet to rotate a cube and a hypercube to see multiple views of the shapes at once.

Mathematical and computer programming oriented approach. Discusses wireframe rendering and ray-tracing.

A short introduction to the fourth dimension, plus a hypercube java applet game.