9 spheres are following pure uniform circular motions in a tridimensional space
about a fixed point (yellow).
A virtual sphere (dark blue) is added to this set.
Each frame of this animation displays a particular trajectory of this sphere
when moved from the farthest sphere to the fixed point.
(CMAP28 WWW site: this page was created on 11/21/2000 and last updated on 01/10/2021 13:51:06 -CET-)