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The “checkershadow” illusion

The “checkershadow” illusion
The “checkershadow” illusion The “checkershadow” illusion, an optical illusion published by Edward H. Adelson in 1995; on the left hand side, squares A and B look to have very different brightness, but are in fact the same, as demonstrated on the right. ©1995, Edward H. Adelson, Massachusetts Institute of Technology