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Changes: Same color illusion

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* [http://www.archimedes-lab.org/color_optical_illusions.html Illusion of colours]
 
* [http://www.archimedes-lab.org/color_optical_illusions.html Illusion of colours]
   
 
{{optics-stub}}
 
   
 
[[Category:Optical illusions]]
 
[[Category:Optical illusions]]

Latest revision as of 13:04, November 26, 2006

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Optical.greysquares.arp
Squares A and B are the same color.
LifeartistAdded by Lifeartist
Optical.greysquares.arp
As the cylinder's shadow forms square B appears to lighten.
Dr Joe KiffAdded by Dr Joe Kiff

The same color illusion — also known as Adelson’s checker shadow illusion, checker shadow illusion and checker shadow — is an optical illusion published by Ted Adelson in 1995. The squares A and B on the illusion are of the same color (or shade), although they seem to be different.

"When interpreted as a 3-dimensional scene, our visual system immediately estimates a lighting vector and uses this to judge the property of the material."[1]

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  1. michaelbach.de. URL accessed on 2006-06-10.

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