Commons:Picture of the Year/2008/Results/Round 2/Caption/File:8-cell-simple.gif
A 3D projection of a four-dimensional hypercube performing a simple rotation about a plane which bisects the figure from front-left to back-right and top to bottom.
A 3D projection of a four-dimensional hypercube performing a simple rotation about a plane which bisects the figure from front-left to back-right and top to bottom.