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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.

Rorscharch inkblot

What Optical Illusions Reveal about You

Bezold effect fabric

Bezold Effect

sorrowful rock face pareidolia

How do optical illusions work?

Treesome

A treesome

Original: lost on the web Credit: Imgur

Ever wondered how ents were created?
This treesome is a dirty example of pareidolia, which is when you recognize shapes in random patterns. 

More optical illusions:

Giant lamps
Shadow cat
Big dog
Funny tree with a face
Goblin spy on a plane
Cat defies gravity
Hidden cat
Fair Game
  • Pareidolia
  • Physical illusions
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two shaven heads looking like labia

Shaven

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best friends dirty illusion

Best friends

a dirty mind