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Knowledge Cats Dirty Minds
Reflection Nature Mirrors

Knowledge

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

Prehistoric ambiguous illusion

The history of optical illusions in art

Forced perspective image Pisa tower

Forced Perspective

Squirrel Stereogram

Stereograms

Migrating horses

These migrating horses are actually shadows of zebras.

Source/credit: Beverly Joubert

These migrating horses are actually shadows of zebras. The stripes do work well as camouflage. However, the morning sunlight over the Makgadikgadi pans in Botswana casts long, visible shadows.

More optical illusions:

Not a brick
Flaming Hot Girl
Cat's face
Bride Waterfall
Model ship on poles
Bird in the Sky
Schrödinger's Scat
Deformed Building
  • Pareidolia
  • Physical illusions
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This Godzilla cloud is a case of pareidolia

Godzilla

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Footprint in the sand

Objects