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  2. Schroeder stairs - Wikipedia

    en.wikipedia.org/wiki/Schroeder_stairs

    Schroeder stairs can be perceived in two ways, depending on whether the viewer considers A or B to be the closer wall. Schroeder stairs (Schröder's stairs) is an optical illusion which is a two-dimensional drawing which may be perceived either as a drawing of a staircase leading from left to right downwards or the same staircase only turned upside down, a classical example of perspective ...

  3. Penrose stairs - Wikipedia

    en.wikipedia.org/wiki/Penrose_stairs

    The Escherian Stairwell is a viral video based on the Penrose stairs illusion. The video, filmed at Rochester Institute of Technology by Michael Lacanilao, was edited to create a seemingly cyclic stairwell such that if someone walks in either direction, they will end up where they started. [ 12 ]

  4. Relativity (M. C. Escher) - Wikipedia

    en.wikipedia.org/wiki/Relativity_(M._C._Escher)

    Relativity is a lithograph print by the Dutch artist M. C. Escher, first printed in December 1953.The first version of this work was a woodcut made earlier that same year. [1]

  5. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    The Moon illusion is an optical illusion in which the Moon appears larger near the horizon than it does while higher up in the sky. Motion aftereffect: Motion illusion: Müller-Lyer illusion: The Müller-Lyer illusion is an optical illusion consisting of a stylized arrow. Multistable perception: Necker cube

  6. Multistable perception - Wikipedia

    en.wikipedia.org/wiki/Multistable_perception

    Examples of visually ambiguous patterns. From top to bottom: Necker cube, Schroeder stairs and a figure that can be interpreted as black or white arrows. Multistable perception (or bistable perception) is a perceptual phenomenon in which an observer experiences an unpredictable sequence of spontaneous subjective changes.

  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. Fata Morgana (mirage) - Wikipedia

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

    As is well known, atmospheric ducting is the explanation for certain optical mirages, and in particular the arctic illusion called "fata morgana" where distant ocean or surface ice, which is essentially flat, appears to the viewer in the form of vertical columns and spires, or "castles in the air". People often assume that mirages occur only ...

  9. M. C. Escher in popular culture - Wikipedia

    en.wikipedia.org/wiki/M._C._Escher_in_popular...

    The Comedy Central animated series Drawn Together has a first-season episode, "Clara's Dirty Little Secret", where Clara believes she is pregnant, and Toot suggests that she fall down some stairs. Clara thinks of a suitable room and leads them to the "M. C. Escher room", where Toot pushes Clara down (and up, around and back down) a flight of ...