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Knowledge Cats Dirty Minds
Clouds Color Constancy Ambiguous

Knowledge

Facts, science and history of optical illusions.
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Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Rorscharch inkblot

What Optical Illusions Reveal about You

Squirrel Stereogram

Stereograms

Dude, where is my car?

Pigeons looking for their car
Original credit: TastyTalk

This photo of two pigeons on a ledge is an example of Forced Perspective. Because the ledge has become indistinguishable from the car park behind it, the pigeons look enormous.

 

More optical illusions:

Grumpy tree
Baby Bigfoot
Migrating horses
Bicycle wheels on a truck
Baby Ostrich
A Lego bed
Canoe in the Winter
Highway Loop
  • Pareidolia
  • Physical illusions
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photo doctored by NASA

NASA doctored photos?

Cars

Legs up over the shoulders

Legs up

People