Because of this 3-word optical phenomenon, still images projected at 24 frames per second seem to be moving pictures
This special kind of ``magic lantern''3 projected colored, hand-drawn images... [DOC] [TLE] The Persistence of Vision - Foundations Magazine [PAR] When we go to the movies, we know that a motion picture creates an illusion of a 
... Today's motion pictures flash a picture on the screen at flicker-free 24 frames 
per second.