This movie shows in succession:
a Lorentz boost from Cerulean's spacetime frame to Vermilion's;
a spatial rotation by 180o in Vermilion's frame;
a Lorentz boost from Vermilion's spacetime frame to Cerulean's;
a spatial rotation by 180o in Cerulean's frame.
Centre of the Lightcone
Updated 24 Mar 1998