Sander illusion

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Sander illusion

The Sander illusion or Sander's parallelogram is an optical illusion described by the German psychologist Friedrich Sander (1889-1971) in 1926. The diagonal line bisecting the larger, left-hand parallelogram appears to be considerably longer than the diagonal line bisecting the smaller, right-hand parallelogram, but is in fact the same length.

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Categories: Psychology stubs | Optical illusions

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• This page was last modified 09:08, 18 August 2006 by Wikipedia user Tavilis. Based on work by Wikipedia user(s) King Vegita, Anschelsc and Stevertigo and Anonymous user(s) of Wikipedia.
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