Kanizsa Polygon Illusion
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We see a shape defined by the missing parts of the disks at its vertices. This optical contour illusion was found by the Italian psychologist Gaetano Kanizsa in 1955.
Contributed by: Michael Schreiber (March 2011)
Open content licensed under CC BY-NC-SA
"Kanizsa Polygon Illusion"
Wolfram Demonstrations Project
Published: March 7 2011