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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

Squirrel Stereogram

Stereograms

sorrowful rock face pareidolia

How do optical illusions work?

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:

Enormous cat napping
Floating Black Cat
Tree Mural
Big dog
Giant lamps
Crow
Transparent Car Key
This Patio
  • Pareidolia
  • Physical illusions
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