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Knowledge

Facts, science and history of optical illusions.
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Can animals see optical illusions? Hosico cat shows it with optical illusion rug

Animals and optical illusions

Bezold effect fabric

Bezold Effect

Forced perspective image Pisa tower

Forced Perspective

Painting the sky

Painting the sky

Source/credit: NootellaDude

The building is being painted in a color that matches the sky, making it very hard to distinguish between the building and the sky.

The top of the brick wall is still unpainted, and the left side lines up with the street light.

More optical illusions:

Lake View Garden
Parking ramp
In Search for Water
Winter Tornado
Snake cat
Delivery car
What big mouth you have!
Ominous bird
  • Pareidolia
  • Physical illusions
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cat plastic bag

Cat in the bag

Cats

Big dog looking over fence

Big dog

Dogs