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Knowledge Cats Dirty Minds
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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.

Forced perspective image Pisa tower

Forced Perspective

The Dress blue black white gold

Color Constancy Illusions

Prehistoric ambiguous illusion

The history of optical illusions in art

Flapping in the wind

Curtains flapping in the wind

Source/credit: Henu3gumb

These curtains are flapping in the wind. But your dirty mind may be reminded of something else.

More optical illusions:

Hovering Car
The Grinch
God of all Cats
Inappropriately Dressed
Sword-billed Hummingbird
Floating either way
Off-road Truck Capabilities
Screw hole
  • Pareidolia
  • Physical illusions
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Dog with bone

Bone

a dirty mind

Hidden cat

Cats