The journey of a sphere (dark blue) in a system of pure uniform non concentric circular motions -moving point of view (dark blue)- [Le voyage d'une sphère (bleue sombre) dans un système de purs mouvements circulaires uniformes -point de vue de la sphère (bleue sombre) en mouvement-]
. 2 3
V R = constant
2
T
---- = constant
3
R
this animation displays a particular trajectory of this sphere
when moved from the farthest sphere to a tenth fixed point (yellow).
For each of these intermediate trajectories, the sphere motion is visualized
with the virtual sphere at the origin of coordinates.