- Remember the Platonic solids from school? Wondered what they look like in higher dimensions? John Baez gives a delightfully readable account of the Platonic Solids in All Dimensions.
- One of the weirdest of the Platonic zoo is the 4D ‘24-cell’ which Baez describes as “a denizen of 4 dimensions with no analog in lower dimensions”. Contemplate Tony Smith’s stereoscopic animation of the 4D 24-cell.
- Check out Mark Newbold’s Hyperspace Star Polytope Slicer

- Rotating 4D hypercube (this page; 46K GIF movie).
- Rotating 4D spacetime hypercube (47K GIF movie).
- Both 4D hypercube movies together.

Back to The Postulates of Special Relativity

**Updated** 19 Jan 2005