Chromatrope
Chromatrope , noun
[Greek {not transcribed} color + {not transcribed} turn, rotation, {not transcribed} to turn.]
1.
(Physics) An instrument for exhibiting certain chromatic effects of light (depending upon the persistence of vision and mixture of colors) by means of rapidly rotating disks variously colored.
2.
A device in a magic lantern or stereopticon to produce kaleidoscopic effects.