optical+illusions
41Entoptic phenomenon — This is a medical definition of entoptic phenomena. For an alternative use within archaeology please see Entoptic phenomena (archaeology) Entoptic phenomena are visual effects whose source is within the eye itself. (Occasionally, these are called …
42op art — op art, adj. op artist. a style of abstract art in which lines, forms, and space are organized in such a way as to provide optical illusions of an ambiguous nature, as alternately advancing and receding squares on a flat surface. Also, Op Art.… …
43illusion — Formerly known as illusio, fallacia, and idolum. The term illusion comes from the Latin verb illudere, which means to mock, to delude, to tempt. It is unknown when and by whom the term was introduced, but it has been in use since ancient times …
44Spellbinder (DC Comics) — Spellbinder is a name of three DC Comics villains, and versions of the character have appeared on both Batman Beyond and The Batman animated series.Delbert BillingsSuperherobox caption= Spellbinder from Detective Comics #358, artist Carmine… …
45Unidentified flying object — UFO redirects here. For other uses, see UFO (disambiguation). Photograph of alleged UFO, New Jersey, July 31, 1952 A term originally coined by …
46Perception — For other uses, see Perception (disambiguation). Perceptual redirects here. For the Brian Blade album, see Perceptual (album). Robert Fludd s depiction of perception (1619) …
47Impossible object — An impossible object (also known as an impossible figure or an undecidable figure) is a type of optical illusion consisting of a two dimensional figure which is instantly and subconsciously interpreted by the visual system as representing a… …
48Oppel-Kundt illusion — Also known as Oppel illusion, filled space illusion, and filled/unfilled space illusion. The eponym Oppel Kundt illusion refers to the German physicists Johann Joseph Oppel (1815 1894) and August Adolph Eduard Eberhard Kundt (1839 1894), who… …
49eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… …
50Modularity of mind — The concept of modularity is also used in other fields. See modularity. Modularity of mind is the notion that a mind may, at least in part, be composed of separate innate structures which have established evolutionarily developed functional… …
