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Knowledge Cats Dirty Minds
Refraction Pareidolia Color Constancy

Knowledge

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

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

Bezold effect fabric

Bezold Effect

Is this a bird or a rabbit?

Ambiguous illusions

Pipe Cleaner Arms

Pipe cleaner Arms

Source/credit: Lobke Leijser

The white sweater with black stripe is very confusing. But if you look closely you can see that the girl doesn’t have pipecleaner arms, and distinguish between the sweater and the cat fur.

More optical illusions:

Floor Color Creates Extra Dimension
Erased Street Art
God of all Cats
Feeling deflated
Missing paw
Confusing pants
Magnus the Impaled
Eyeglasses
  • Pareidolia
  • Physical illusions
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A starry night sky optical illusion

A Starry Night Sky

Nature

Galaxy far away at Burning Man

A Galaxy Far Away

Nature