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Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Rainbows are illusions

Types of Optical Illusions

Is this a bird or a rabbit?

Ambiguous illusions

The Dress blue black white gold

Color Constancy Illusions

UFO

UFO ready for takeoff

Source/credit: Александр Лубянченко

Krestovsky Stadium in St. Petersburg on the first day of spring

 

More optical illusions:

Dogs sharing a mouth
Some shiny legs
Big cat on the roof
Dog jumping a giant hole
Dog Log
If it fits...
A couple of cars in a parking lot
Sun Dogs
  • Pareidolia
  • Physical illusions
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Sand bear

Sand Bear

Animals

Exotic golden bird

Exotic Bird

Birds