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==References==
==References==
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{{reflist}}
*{{cite book|last=Fineman|first=Mark|title=The Nature of Visual Illusion|publisher=Dover Publications|pages=152-153|date=1996|isbn=0486291057}}
*{{cite book|last=Fineman|first=Mark|title=The Nature of Visual Illusion|publisher=Dover Publications|pages=[https://archive.org/details/natureofvisualil0000fine/page/152 152-153]|date=1996|isbn=0486291057|url=https://archive.org/details/natureofvisualil0000fine/page/152}}
*{{cite book|last=Robinson|first=J.O.|title=The Psychology of Visual Illusion|publisher=Dover Publications|pages=72-73|date=1998|isbn=978-0486404493}}
*{{cite book|last=Robinson|first=J.O.|title=The Psychology of Visual Illusion|publisher=Dover Publications|pages=72-73|date=1998|isbn=978-0486404493}}



Revision as of 09:09, 4 March 2020

Orbison illusion consisting of a square placed over radial lines.

The Orbison illusion (or Orbison's illusion) is an optical illusion first described by American psychologist William Orbison (1912–1952)[1] in 1939.

The illusion consists of a two dimensional figure, such as a circle or square, superimposed over a background of radial lines or concentric circles. The result is an optical illusion in which both the figure and the rectangle which contains it appear to distorted; in particular, squares appear slightly bulged, circles appear elliptical, and the containing rectangle appears tilted.[2]

References

  1. ^ Roeckelein, Jon E. (2006). Elsevier's Dictionary of Psychological Theories. Amsterdam: Elsevier. p. 651. ISBN 9780444517500.
  2. ^ "Orbison illusion". opticalillusions.info. Retrieved June 30, 2016.