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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.

The Dress blue black white gold

Color Constancy Illusions

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Prehistoric ambiguous illusion

The history of optical illusions in art

Crow

Crow on the kitchen floor
Original credit: jesusgains

If you do not have 20/20 vision, you will see a crow on the kitchen floor. But a closer look, or a pair of glasses, can help you identify the black cat.

More optical illusions:

Missing Chair Leg
Bicycle wheels on a truck
Sexy Birch
Strained Expression
Nature's Dance
Bending the Walls
A sorrowful rock
Lake View Garden
  • Pareidolia
  • Physical illusions
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cat face refraction

Cat’s face

Cats

Toki is flying through the woods

Flying through the woods

Cats