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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.

Rainbows are illusions

Types of Optical Illusions

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

The Dress blue black white gold

Color Constancy Illusions

Boobs or knee?

boobs or knee

Credit: Conill Advertizing

This is a photo of a knee made sexy by adding lingerie by Jane Pain. The ad agency Conill did an amazing job and made the campaign go viral in 2015.

More optical illusions:

A Flying Island
Skydiving Corgi
Giant bullfrog
Screaming up or down?
Parking ramp
Giant in the Forest
Giant Ship
Dog Log
  • Pareidolia
  • Physical illusions
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blend with nature

Blend with nature

Nature

Knees and toes sexy illusion ad campaign

Knees and toes

a dirty mind