The three pink- and blue-colored parallelograms are the same. All blue lines are equal in length; all pink lines are also equal. Box B is simply Box C rotated counterclockwise. But the three parallelograms look different, and boxes B and C look different. Our visual system assumes that the diagonals in A and C are foreshortened and “stretches” them perceptually. The pink lines in B should be foreshortened and stretched, just as they are in C. But our visual system doesn’t stretch a horizontal quite as much as it stretches a diagonal.Most of the illusions (including the number 1) are animated on the site. Also check out the finalists of previous years in the menu on the left.
nice site,
ReplyDeleteI like the illusion of sex aswel. Wonder why lesser contrast makes appear more masculine