These Mindbending Optical Illusions Will Break Your Brain

Kanisza Triangle

In 1955, Italian psychologist Gaetano Kanizsa created a classic example of illusory contours: the Kanizsa Triangle. The above image forces the eye to perceive a white equilateral triangle even though there are no explicit lines to indicate such. Our eyes naturally try to find suggestions of shapes that aren’t really there.

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The More You Know

  • Tic Tac mints are named after the sound their container makes.
  • The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.
  • Armadillos swallow air to become buoyant when they swim.
  • A full jumbo jet tank has enough fuel to drive a car around the world four times.
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