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Knowledge Cats Dirty Minds
Mirage Refraction Distortion

Knowledge

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

sorrowful rock face pareidolia

How do optical illusions work?

Can animals see optical illusions? Hosico cat shows it with optical illusion rug

Animals and optical illusions

The Dress blue black white gold

Color Constancy Illusions

The Invasion

Street in Macau

Source/credit: Paul Tsui and National Geographic

This picture was entered into National Geographic travel photo competition by Paul Tsui. It depicts a real scene of Macau, with the Grand Lisboa Hotel looming in the background. 

More optical illusions:

Parquet Floor
Eye of a tree
Screw hole
Exotic Bird
LEGO brick floor
Goofy Tree
Goal perspective
Splash!
  • Pareidolia
  • Physical illusions
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Zombies attack

Zombie Attack

Zombies

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Cat a log

Cats