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Knowledge

Facts, science and history of optical illusions.
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sorrowful rock face pareidolia

How do optical illusions work?

The Dress blue black white gold

Color Constancy Illusions

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

Animals and optical illusions

Troll in Allegany State Park

troll in the park

Source/credit: spacemanspiff8655

This troll in Allegany State Park in New York has turned into stone. 

Mimetoliths are rocks that appear to take on familiar shapes, due to pareidolia.

More optical illusions:

Floating cat head
The Pensive Olive Tree
The eye of the tower
Afro tree
Swamp monster
Winter Tornado
Splash!
Elvish Writing
  • Pareidolia
  • Physical illusions
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