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Knowledge Cats Dirty Minds
Ghosts Chairs Nature

Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Rainbows are illusions

Types of Optical Illusions

Bezold effect fabric

Bezold Effect

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:

Big dog
Cat in the bag
Separation
Painting the sky
Rock Climbing
White Egret
Bar Stools
Eyeglasses
  • Pareidolia
  • Physical illusions
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two shaven heads looking like labia

Shaven

a dirty mind

best friends dirty illusion

Best friends

a dirty mind