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[[Image:Orbison illusion.svg|thumb|right|Orbison illusion consisting of a square placed over radial lines.]] |
[[Image:Orbison illusion.svg|thumb|right|Orbison illusion consisting of a square placed over radial lines.]] |
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The '''Orbison illusion''' (or '''Orbison's illusion''') is an [[optical illusion]] first described by |
The '''Orbison illusion''' (or '''Orbison's illusion''') is an [[optical illusion]] first described by American psychologist [[William Orbison]] (1912–1952)<ref name=DOPT>{{cite book|last=Roeckelein|first=Jon E.|date=2006|title=Elsevier's Dictionary of Psychological Theories|url=https://books.google.com/books?id=1Yn6NZgxvssC&q=william+orbison+psychologist&pg=PA651|location=Amsterdam|publisher=Elsevier|page=651|isbn=9780444517500}}</ref> in 1939. |
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The illusion consists of a two dimensional figure, such as a [[circle]] or [[square]], superimposed over a background of [[radial line]]s or [[concentric|concentric circle]]s. The result is an optical illusion in which both the figure and the [[rectangle]] which contains it appear distorted; in particular, squares appear slightly bulged, circles appear [[ellipse|elliptical]], and the containing rectangle appears tilted.<ref name=OII>{{cite web|url=http://www.optical-illusions.info/illusions/Orbison_illusion.htm|title=Orbison illusion|website=opticalillusions.info|access-date=June 30, 2016|archive-url=https://web.archive.org/web/20161007173234/http://www.optical-illusions.info/illusions/Orbison_illusion.htm|archive-date=October 7, 2016|url-status=dead}}</ref> |
The illusion consists of a two dimensional figure, such as a [[circle]] or [[square]], superimposed over a background of [[radial line]]s or [[concentric|concentric circle]]s. The result is an optical illusion in which both the figure and the [[rectangle]] which contains it appear distorted; in particular, squares appear slightly bulged, circles appear [[ellipse|elliptical]], and the containing rectangle appears tilted.<ref name=OII>{{cite web|url=http://www.optical-illusions.info/illusions/Orbison_illusion.htm|title=Orbison illusion|website=opticalillusions.info|access-date=June 30, 2016|archive-url=https://web.archive.org/web/20161007173234/http://www.optical-illusions.info/illusions/Orbison_illusion.htm|archive-date=October 7, 2016|url-status=dead}}</ref> |
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Revision as of 18:57, 21 July 2021
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 distorted; in particular, squares appear slightly bulged, circles appear elliptical, and the containing rectangle appears tilted.[2]
References
- ^ Roeckelein, Jon E. (2006). Elsevier's Dictionary of Psychological Theories. Amsterdam: Elsevier. p. 651. ISBN 9780444517500.
- ^ "Orbison illusion". opticalillusions.info. Archived from the original on October 7, 2016. Retrieved June 30, 2016.
- Fineman, Mark (1996). The Nature of Visual Illusion. Dover Publications. pp. 152-153. ISBN 0486291057.
- Robinson, J.O. (1998). The Psychology of Visual Illusion. Dover Publications. pp. 72–73. ISBN 978-0486404493.
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