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The size–weight illusion is also known as the Charpentier illusion or Charpentier–Koseleff illusion. Stepping feet illusion: The stepping feet illusion is influenced by the contrast between moving objects and their background. Stroboscopic effect: Swept-plane display: Ternus illusion: The Ternus illusion (1926/1938) is based upon apparent ...
Optical illusion is also used in film by the technique of forced perspective. Op art is a style of art that uses optical illusions to create an impression of movement, or hidden images and patterns. Trompe-l'œil uses realistic imagery to create the optical illusion that depicted objects exist in three dimensions.
An optical illusion is any illusion that deceives the human visual system into perceiving something that is not present or incorrectly perceiving what is present. Contents Top
A Fata Morgana can display an object that is located below the astronomical horizon as an apparent object hovering in the sky. A Fata Morgana can also magnify such an object vertically and make it look absolutely unrecognizable. Some UFOs which are seen on radar may also be due to Fata Morgana mirages. Official UFO investigations in France ...
The widely accepted interpretation of, e.g. the Poggendorff and Hering illusions as manifestation of expansion of acute angles at line intersections, is an example of successful implementation of a "bottom-up," physiological explanation of a geometrical–optical illusion. Ponzo illusion in a purely schematic form and, below, with perspective clues
Penrose triangle. The Penrose triangle, also known as the Penrose tribar, the impossible tribar, [1] or the impossible triangle, [2] is a triangular impossible object, an optical illusion consisting of an object which can be depicted in a perspective drawing.
An illusion device is how illusion optics works—without a device there is no way to define how light is refracted and deflected. Based on a study on circular objects with illusion optic properties, (i.e. negative refraction indexes) there are three basics of an illusion device: the invisibility cloak, real object, and illusion object. [3]
Poster showing Shepard elephant (4 legs, 4 feet) The Shepard elephant, also known as L'egs-istential Quandary or the impossible elephant is an optical illusion, of the type impossible object, based on figure-ground confusion.