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Knowledge

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

Anamorphic optical illusions

Bezold effect fabric

Bezold Effect

Forced perspective image Pisa tower

Forced Perspective

Exxxtra leg

dirty mind illusion with an exxxtra leg
Credit: melossta

At first glance you may think this guys penis is hanging out of his shorts, but if your vision is alright, you can see it is an exxxtra leg, belonging to someone standing behind the guy.

More optical illusions:

Ghost Cat
Transparent Car Key
Unsuspecting Amputee
Catfusion
Echidna kitten
Painting of the Ocean
Big bottoms
A Festival for Ants
  • Pareidolia
  • Physical illusions
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sword-billed hummingbird

Sword-billed Hummingbird

Birds

hills with trees

Hills and trees

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