Talking about optical illusions, here’s a bunch of them. Great that many of them are made as javascripts so that the effects can be changed.
[ youtube=http://youtube.com/w/?v=_dIya1aJJKA]
Optical Illusions and Visual Phenomena
Published by
Music researcher. Research musician. RITMO. University of Oslo. NIME. NordicSMC. Open Research. Father.