optical+illusions
121Lucent Technologies — Infobox Company | company name = Lucent Technologies, Inc. company company type = Defunct foundation = 1996 location city = Murray Hill, New Jersey location country = USA key people = Patricia Russo, Chairman, and CEO industry =… …
122Floater — For other uses, see Floater (disambiguation). Floater Classification and external resources Simulated image of floaters against a blue sky ICD 10 H …
123Micropsia — An illustration depicting the symptoms of micropsia from Lewis Carroll s 1865 novel Alice s Adventures in Wonderland. ICD 10 H …
124Missing square puzzle — The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures. It depicts two arrangements of shapes, each of which apparently forms a 13×5 right angled triangle, but one of which… …
125OP — OP, O.P., or Op may refer to any of the following: Observation post, a position from which soldiers can watch enemy movements Ocean Pacific, a retail company based in California, United States Orange pekoe, a term used in the Western tea trade to …
126Brocken spectre — Brocken spectre. This is not actually on Brocken, but was taken in the Tanzawa Mountains in Japan; despite the name, the phenomenon is not unique to Brocken and can occur in any misty mountain region …
127McCollough effect — (click to enlarge) A test image for the McCollough effect. On first looking at this image, the vertical and horizontal lines should look black and white, colourless. After induction (see images below), the horizontal lines should look greenish… …
128Ponzo illusion — An example of the Ponzo Illusion. Both horizontal lines are the same size. The Ponzo illusion is a geometrical optical illusion that was first demonstrated by the Italian psychologist Mario Ponzo (1882–1960) in 1913. He suggested that the human… …
