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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.

Bezold effect fabric

Bezold Effect

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

Prehistoric ambiguous illusion

The history of optical illusions in art

Sneaky steps

Sneaky steps

Source/credit: BettaSplendens1

This hotel room has some sneaky steps that are really hard to see, thanks to the zigzagging carpet.

More optical illusions:

Floating tracks
Bird in the Sky
Funny tree with a face
Toy Cars
Exotic Bird
Skull
A Giant on the Beach
How many?
  • Pareidolia
  • Physical illusions
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deflated dog

Deflated dog

Dogs

giant christmas cat

Giant Christmas Cat

Cats