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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. Café wall illusion - Wikipedia

    en.wikipedia.org/wiki/Café_wall_illusion

    But a component of the illusion remains even when all optical and retinal components are factored out. Contrast polarities seem to be the determining factor in the tilt's direction. [10] Richard Gregory visits the original café wall on St Michael's Hill, Bristol, in February 2010 Architecture inspired by the café wall illusion, at Melbourne ...

  4. Museum of Illusions - Wikipedia

    en.wikipedia.org/wiki/Museum_of_Illusions

    The Museum of Illusions (Croatian: Muzej iluzija) is a franchise of museums that host a variety of exhibits of optical and other types of illusions. [1] The first museum in the franchise was opened in 2015 in Zagreb, Croatia. As of May 2023, the franchise consists of 43 museums in 25 countries. [2]

  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. Fraser spiral illusion - Wikipedia

    en.wikipedia.org/wiki/Fraser_spiral_illusion

    Fraser spiral illusion. The Fraser spiral illusion is an optical illusion that was first described by the British psychologist Sir James Fraser (1863–1936) in 1908. [1] The illusion is also known as the false spiral, or by its original name, the twisted cord illusion. The overlapping black arc segments appear to form a spiral; however, the ...

  7. Chromostereopsis - Wikipedia

    en.wikipedia.org/wiki/Chromostereopsis

    Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images. [1] [2] Such illusions have been reported for over a century and have generally been attributed to some form of chromatic ...