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Knowledge Cats Dirty Minds
the tag: Cognitive Illusions Buildings Hidden objects

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

sorrowful rock face pareidolia

How do optical illusions work?

Prehistoric ambiguous illusion

The history of optical illusions in art

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:

How many?
Painting the sky
Toy Cars
Smile!
Perfectly Polished
Big Dog
Dogs sharing a mouth
Giant Moon
  • 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