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  2. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    The Hering illusion (1861): When two straight and parallel lines are presented in front of radial background (like the spokes of a bicycle), the lines appear as if they were bowed outwards. Hollow-Face illusion: The Hollow-Face illusion is an optical illusion in which the perception of a concave mask of a face appears as a normal convex face.

  3. Phantogram (optical illusion) - Wikipedia

    en.wikipedia.org/wiki/Phantogram_(optical_illusion)

    Phantograms, also known as Phantaglyphs, Op-Ups, free-standing anaglyphs, levitated images, and book anaglyphs, are a form of optical illusion.Phantograms use perspectival anamorphosis to produce a 2D image that is distorted in a particular way so as to appear, to a viewer at a particular vantage point, three-dimensional, standing above or recessed into a flat surface.

  4. Al Seckel - Wikipedia

    en.wikipedia.org/wiki/Al_Seckel

    Alfred Paul "Al" Seckel (September 3, 1958 – 2015) was an American collector and popularizer of visual and other types of sensory illusions, who wrote books about them.. Active in the Freethought movement as a skeptic in the 1980s, he was the co-founder [1] and executive director of the Southern California Skepti

  5. Shepard tables - Wikipedia

    en.wikipedia.org/wiki/Shepard_tables

    Shepard tables illusion, named for its creator Roger N. Shepard. Shepard tables (also known as the Shepard tabletop illusion) are an optical illusion first published in 1990 as "Turning the Tables," by Stanford psychologist Roger N. Shepard in his book Mind Sights, a collection of illusions that he had created. [1]

  6. Ebbinghaus illusion - Wikipedia

    en.wikipedia.org/wiki/Ebbinghaus_illusion

    The Ebbinghaus illusion or Titchener circles is an optical illusion of relative size perception. Named for its discoverer, the German psychologist Hermann Ebbinghaus (1850–1909), the illusion was popularized in the English-speaking world by Edward B. Titchener in a 1901 textbook of experimental psychology, hence its alternative name. [ 1 ]

  7. The optical illusion hidden in the 'Mona Lisa' explained - AOL

    www.aol.com/news/2015-08-22-the-optical-illusion...

    Art historians say Leonardo da Vinci hid an optical illusion in the Mona Lisa's face: she doesn't always appear to be smiling. There's question as to whether it was intentional, but new research ...

  8. Shepard elephant - Wikipedia

    en.wikipedia.org/wiki/Shepard_elephant

    (If you cover the bottom of the drawing, you see the top of an elephant with four legs. If you cover the drawing's top, you see four elephant feet, plus trunk and tail.) [ 5 ] Al Seckel , who devotes Chapter 18 of his book Masters of Deception to Roger Shepard, draws a contrast between Shepard's elephant and the impossible trident (aka the ...

  9. Say I Love You (manga) - Wikipedia

    en.wikipedia.org/wiki/Say_I_Love_You_(manga)

    Say I Love You (Japanese: 好きっていいなよ。, Hepburn: Suki-tte ii na yo) is a Japanese manga series written and illustrated by Kanae Hazuki. It was serialized in Kodansha's shōjo manga magazine Dessert from February 2008 to July 2017, with its chapters collected in 18 tankōbon volumes.