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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.

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

Animals and optical illusions

Bezold effect fabric

Bezold Effect

Is this a bird or a rabbit?

Ambiguous illusions

Up or Down?

Stairs up or down?

Source: IndoorPilot

This stair is obviously going down. The sunshine and shadows are great clues, but it would also be impossible for the bottom cat to sleep like this if it was going up.

More optical illusions:

Boiling a bird
Birds are not Real
A Starry Night Sky
Bride kissing a fish
Erased Street Art
Water drop
Dogs sharing a mouth
How many?
  • Pareidolia
  • Physical illusions
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impossible stair railing

Impossible Stair Railing

Stairs

parquet floor or dangerous stairs?

Parquet Floor

Floors