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  2. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    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. Hybrid image: A Hybrid image is an optical illusion developed at MIT in which an image can be interpreted in one of two different ways depending on viewing distance. Illusory contours

  3. 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.

  4. Jastrow illusion - Wikipedia

    en.wikipedia.org/wiki/Jastrow_illusion

    Animals are known to observe many of the same optical illusions as humans do, but this was the first study to demonstrate that the Jastrow illusion is also experienced by chimpanzees. The Fat Face illusion happens when two identical images of the same face are aligned vertically, the face at the bottom appears fatter.

  5. 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 ...

  6. Fata Morgana (mirage) - Wikipedia

    en.wikipedia.org/wiki/Fata_Morgana_(mirage)

    O sweet illusions of song That tempt me everywhere, In the lonely fields, and the throng Of the crowded thoroughfare! I approach and ye vanish away, I grasp you, and ye are gone; But ever by night and by day, The melody soundeth on. As the weary traveler sees In desert or prairie vast, Blue lakes, overhung with trees That a pleasant shadow cast;

  7. Lilac chaser - Wikipedia

    en.wikipedia.org/wiki/Lilac_chaser

    The lilac chaser illusion combines three simple, well-known effects, as described, for example, by Bertamini. [6]The phi phenomenon is the optical illusion of perceiving continuous motion between separate objects viewed rapidly in succession.

  8. Fraser spiral illusion - Wikipedia

    en.wikipedia.org/wiki/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 arcs are a series of ...

  9. Delboeuf illusion - Wikipedia

    en.wikipedia.org/wiki/Delboeuf_illusion

    Though the two circled dark discs are the same size, the left disc seems smaller than the right one. The Delboeuf illusion is an optical illusion of relative size perception: In the best-known version of the illusion, two discs of identical size have been placed near to each other and one is surrounded by a ring; the surrounded disc then appears larger than the non-surrounded disc if the ring ...