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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.

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

sorrowful rock face pareidolia

How do optical illusions work?

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Knees and toes

Knees and toes sexy illusion ad campaign

Credit: McCann Worldgroup

This ad campaign titled ‘Knees’ was published in Thailand in February, 2010. It was created for Boots Body Cream, by ad agency McCann. 

The ‘boobs’ are a sexy illusion created by knees and toes.

More optical illusions:

Splash!
Sword-billed Hummingbird
Flying Cargo Ship
Cat Head
Beach Yeti
Floating either way
Afro tree
Dog Head Mount
  • Pareidolia
  • Physical illusions
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boobs or knee

Boobs or knee?

a dirty mind

Mammogram ad bald men illusion

Mammogram

a dirty mind