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Knowledge Cats Dirty Minds
Zombies Forced Perspective Color Constancy

Knowledge

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

Is this a bird or a rabbit?

Ambiguous illusions

Rorscharch inkblot

What Optical Illusions Reveal about You

Prehistoric ambiguous illusion

The history of optical illusions in art

Big Bird

Big Bird illusion

Source/credit: TeddyRivers

This is a classic example of Forced Perspective, with the bird being much closer than it seems at first. 

 

More optical illusions:

A couple of cars in a parking lot
Schrödinger's Scat
Painting of the Ocean
Parrot
Strained Expression
A sorrowful rock
A Little Army
Pixeled sky
  • Pareidolia
  • Physical illusions
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Ghostrider

Ghostrider

Bicycles

Escher drawing IRL

Escher drawing IRL

Cars