An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to...
(1) the lighting, color, character, and disposition of objects; (2) the mechanism by which the image is formed upon the retina; (3) various optical defects of this mechanism; (4) the sensitiveness of...
Optical illusions are usually not a function of optics, but rather a function of how your brain interprets the patterns of what it sees. As long as you can see the picture or object clearly, you will...
visible angles, contrasting light ( often aided by directional stobe lights) mis-direction of the audience. look at the Ronettes" Transfiguration illusion in the Shindig act, from certain angles,...