impossible object
Sign in to savetwo-dimensional figure representing a projection of a three-dimensional object that cannot exist
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An impossible object (also known as an impossible figure or an undecidable figure) is a type of optical illusion that consists of a two-dimensional figure which is instantly and naturally understood as representing a projection of a three-dimensional object but cannot exist as a solid object. Impossible objects are of interest to psychologists, mathematicians and artists without falling entirely into any one discipline.
Notable examples
Connections
Sweden
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geometry
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International Standard Book Number
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surrealism
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Wayback Machine
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cube
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digital object identifier
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paradox
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dimension
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Roger Penrose
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Marcel Duchamp
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M. C. Escher
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lithography
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illusion
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psychologist
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Q180686
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Möbius strip
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JSTOR
Organization
puzzle
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non-Euclidean geometry
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