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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.

Locomotives in their natural habitat

Pareidolia (Seeing faces)

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

Papercut

Papercut

Source/credit: BroboxylicAcid

This papercut makes the thumb look like a penis. 

More optical illusions:

Pump it up!
Shoebill?
Ent walking
Hidden ad in advertisement page
Tetanus Rainbow
Grumpy tree
Birds are not Real
Bent over the desk
  • Pareidolia
  • Physical illusions
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Grid illusion busty shirt

Grid Illusion Shirt

Objects

Beach Yeti

Beach Yeti

Dogs