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Knowledge Cats Dirty Minds
Mirrors Shadows Physics behind them

Knowledge

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

Bezold effect fabric

Bezold Effect

Parallax effect

Parallax Effect

Squirrel Stereogram

Stereograms

UFOs in the clear sky

UFOs

Source/credit: trueharshit

The UFOs are actually ceiling lights reflecting in the window.

 

More optical illusions:

Next to the boat
Cat's face
Hidden cat
Amish Men using a Truck
Wind turbines
Cat portal
The Grinch
Crow
  • Pareidolia
  • Physical illusions
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Cargo in the sky

Boats

collage illusion of 2 ships

Collage illusion of ship

Boats