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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.

Rainbows are illusions

Types of Optical Illusions

Prehistoric ambiguous illusion

The history of optical illusions in art

The Dress blue black white gold

Color Constancy Illusions

Painting of the Ocean

painting of the ocean

Source: jebleez

The sky in Nebraska looks like a painting of the ocean. 

These clouds are called Asperitas, a new cloud type proposed in 2009 by the Cloud Appreciation Society.

More optical illusions:

Sword-billed Hummingbird
Dog jumping a giant hole
Tree Mural
Missing paw
Gravel flower bed
Cat's face
Gravity hills
A Beard Model
  • Pareidolia
  • Physical illusions
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parquet floor or dangerous stairs?

Parquet Floor

Floors

cloud shaped like an angel

Angel

Clouds