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Knowledge Cats Dirty Minds
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Knowledge

Facts, science and history of optical illusions.
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Squirrel Stereogram

Stereograms

Prehistoric ambiguous illusion

The history of optical illusions in art

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Cat with a Hole

Cat with a hole in its body

Source/credit: leowu77495

This cat’s fur blends with the sand in the background, making it look like a hole.

More optical illusions:

A Giant on the Beach
Floating tracks
Goblin spy on a plane
Phoenix rising
Enormous cat napping
Parquet Floor
Cat Accident
Apartment on fire
  • Pareidolia
  • Physical illusions
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Small Mathieu Valbuena

Fair Game

People

Mirror Step by Derek Paul Boyle

Trippy Stairs

Mirrors