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  2. Kokichi Sugihara - Wikipedia

    en.wikipedia.org/wiki/Kokichi_Sugihara

    Kōkichi Sugihara (Japanese: 杉原厚吉, born June 29, 1948, in Gifu Prefecture) [1] [2] is a Japanese mathematician and artist [3] known for his three-dimensional optical illusions that appear to make marbles roll uphill, [4] [5] pull objects to the highest point of a building's roof, [6] and make circular pipes look rectangular. [7]

  3. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    An isometric illusion (also called an ambiguous figure or inside/outside illusion) is a type of optical illusion, specifically one due to multistable perception. Jastrow illusion The Jastrow illusion is an optical illusion discovered by the American psychologist Joseph Jastrow in 1889.

  4. Optical illusion - Wikipedia

    en.wikipedia.org/wiki/Optical_illusion

    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.

  5. Anamorphosis - Wikipedia

    en.wikipedia.org/wiki/Anamorphosis

    He also wrote multiple books on the topic of optical illusions. Felice Varini's 2014 work Three Ellipses for Three Locks in Hasselt, Belgium is an image of three loops that are made up of segments painted on to over 100 buildings. It is only visible from a specific vantage point over the city. [13]

  6. Illusionistic ceiling painting - Wikipedia

    en.wikipedia.org/wiki/Illusionistic_ceiling_painting

    The perspective of this illusion is centered towards one focal point. The steep foreshortening of the figures, and the painted walls and pillars were and are used to create an illusion of deep recession; a heavenly sphere or even an open sky. Paintings on ceilings could, for example, simulate statues in niches or openings revealing the sky.

  7. Ascending and Descending - Wikipedia

    en.wikipedia.org/wiki/Ascending_and_Descending

    While most two-dimensional artists use relative proportions to create an illusion of depth, Escher here and elsewhere uses conflicting proportions to create the visual paradox. [ 1 ] Ascending and Descending was influenced by, and is an artistic implementation of, the Penrose stairs , an impossible object ; Lionel Penrose had first published ...

  8. Troxler's fading - Wikipedia

    en.wikipedia.org/wiki/Troxler's_fading

    Troxler's fading, also called Troxler fading or the Troxler effect, is an optical illusion affecting visual perception. When one fixates on a particular point for even a short period of time, an unchanging stimulus away from the fixation point will fade away and disappear. Research suggests that at least some portion of the perceptual phenomena ...

  9. Entasis - Wikipedia

    en.wikipedia.org/wiki/Entasis

    Other descriptions argue that the technique emphasizes the substantiality of, not the columns, but rather, of some other part or of the building while being viewed as a whole. Yale architectural historian Vincent Scully argues that entasis emphasizes the weight of the roof of a building by making the building columns appear to bulge under the ...