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Knowledge Cats Dirty Minds
Ghosts Birds Ambiguous

Knowledge

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

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

Animals and optical illusions

Is this a bird or a rabbit?

Ambiguous illusions

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Square shadow

Tree with square shadow

In this picture it looks like the tree has a square shadow. But in reality the light is coming from a side angle and not above. The square shadow is not cast by the tree.

More optical illusions:

Flying through the woods
Giant Party in the Skyline
Magnus the Impaled
Dead Man's Fingers
Fight against Cervical Cancer
Self-assembly
Perfectly Polished
Toe socks?
  • Pareidolia
  • Physical illusions
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Coffee sign

Coffee

Shadows

sunken police car

Sunken police car

Cars