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Knowledge Cats Dirty Minds
Snakes Clouds Trees

Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Locomotives in their natural habitat

Pareidolia (Seeing faces)

Bezold effect fabric

Bezold Effect

Rainbows are illusions

Types of Optical Illusions

Dirt Wheels

Dirt wheel on bicycle optical illusion

Source/credit: MickeySlim

The wheels of this bicycle are actually so dirty that they look the same as the ground. In this optical illusion it becomes hard to see dept. This unintended Forced Perspective makes it seem that the weel has disappeared.

More optical illusions:

The Invasion
Solar Eclipse
Artificial Leather
Door handle
Paperthin Building
Nobody's cow
Tetanus Rainbow
Blueberries
  • Pareidolia
  • Physical illusions
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Cliff at great heights above a highway at Gulek Castle, Turkey.

Great heights

Landmarks

Floating cat head

Cats