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Knowledge

Facts, science and history of optical illusions.
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Bezold effect fabric

Bezold Effect

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

Animals and optical illusions

Forced perspective image Pisa tower

Forced Perspective

Deflated dog

deflated dog

Source/credit: MrN33ds

This deflated dog is a Borzoi, a Russian breed of hunting dog that is very slender. Laying in the tall grass it look a little flat. But here is the same dog upright:

Borzoi

More optical illusions:

Missing Chair Leg
Fried Chicken Tenders
Skywalker
Eye of a tree
Bending the Walls
Giant Moon
Transparent coffee cup
Misaligned Arrow
  • Pareidolia
  • Physical illusions
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Two giants thanks to forced perspective

Two giants

People

Sneaky steps

Sneaky steps

Stairs