These Mindbending Optical Illusions Will Break Your Brain

Columns or People?

Which do you see? The stair banister illusion depicts obvious columns, but in the negative space, you can make out the silhouettes of people. This is called a double image. Sometimes, double images are drawn two-dimensionally, making it even more difficult to decipher.

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The More You Know

  • The speed of a computer mouse is measured in "Mickeys."
  • T-shirts were originally made for unmarried men who didn't know how to sew buttons on collared shirts.
  • Water makes different pouring sounds depending on its temperature.
  • The longest tennis rally lasted over 12 hours.
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