Optical illusion There are a variety of different types of optical illusions. Many are included in the following list. Artists who have worked with optical illusions include M. C. Escher, Bridget Riley, Salvador Dalí, Giuseppe Arcimboldo, Patrick Bokanowski, Marcel Duchamp, Jasper Johns, Oscar Reutersvärd, Victor Vasarely and Charles Allan Gilbert. Contemporary artists who have experimented with illusions include Jonty Hurwitz, Sandro del Prete, Octavio Ocampo, Dick Termes, Shigeo Fukuda, Patrick Hughes, István Orosz, Rob Gonsalves, Gianni A. Sarcone, Ben Heine and Akiyoshi Kitaoka. Optical illusion is also used in film by the technique of forced perspective. Op art is a style of
Illusion Optics band of frequency. Unlike optical illusions that utilize the misinterpretation of the human brain to create illusionary perception different from the physical measurement, illusion optics changes the optical response or properties of objects. Illusion optic devices make these changes happen. Although both these terms deal with illusions, Illusion optics deal with the refraction and reflection of light, whereas while optical illusions are basically mind tricks. Illusion optics was recorded in 1968 when Soviet physicist Victor Veselago discovered that he can make objects appear in different areas through negatively refracting flat slab. When light is negatively refracted, the light is directed