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Knowledge Cats Dirty Minds
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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

Can animals see optical illusions? Hosico cat shows it with optical illusion rug

Animals and optical illusions

Laurel the Tree

An Ent named Laurel

Source/credit: Julien Delaval

This Stinking Laurel Tree lives in Fanal Forest, Madeira, a UNESCO World Heritage Site. The forest is known for its beautiful but eery atmosphere. The centuries-old laurel trees standing in the usual fog seem to have humanlike features.

More optical illusions:

Parking ramp
Monkey Selfie
Gravel flower bed
God of all Cats
Cat in the bag
Elvish Writing
Phoenix rising
Parquet Floor
  • Pareidolia
  • Physical illusions
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The eye of a cyber poppy

Cyber Poppy

Flowers

cactus rock climbing

Rock Climbing

Trees