Kanizsa's Triangle - Optical Illusions - Online Illusions - Optical Tricks - Optic Illusions - Eye Tricks

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Kanizsa's Triangle

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Optical Illusions

Kanizsa's Triangle
This figure was introduced by Gaetano Kanizsa, an Italian psychologist. Everyone sees a white triangle in front of the three black disks and inverted triangle. However, the white triangle actually does not exist. The contours of this triangle are illusory contours created by your brain. Note that the illusory triangle looks brighter than the background. This is a result of brightness contrast caused by the black disks being partially occluded by the corners of the illusory triangle.


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Recommended Reading

cover The Great Book of Optical Illusions
by Al Seckel

cover The Science of Illusions
by Jacques Ninio, Franklin Philip (Translator)

cover Classic Optical Illusions
by Gyles Daubeney Brandreth, Michael A. Dispezio, Katherine Joyce, Keith Kay, Charles H. Paraquin, Bob Longe, David Knowles, Charles Barry Townsend

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    Last Updated May 6, 2012

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