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Impossible Objects

An impossible object is a kind of optical illusion. It consists of a two-dimensional object that our eyes interpret as a projection of an impossible three-dimensional object. The impossible nature of these objects is noticeable after a few seconds of viewing each figure, confusing and unsettling the mind.

Impossible Cube

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The Impossible Cube was invented by M. C. Escher, a famous Dutch graphic artist, for his lithograph Belvedere, in
which the rest of the scene is based on the same principle as the impossible cube.

Penrose Triangle

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While it was first created by Swedish artist Oscar Reutersvärd in 1934, the Penrose Triangle was independently
devised and popularised by Roger Penrose in the 1950s.

Penrose Steps

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The Penrose Steps were introduced by two mathematicians, Lionel Penrose and his son Roger Penrose, in 1959. It depicts a continuous loop of ascending or descending steps.

Blivet

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The Blivet, also known as the Devil’s fork, appears to have three cylindrical prongs at one end, which curiously turn into two rectangular prongs at the other end.

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