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Knowledge Cats Dirty Minds
Floors Refraction Rocks

Knowledge

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

sorrowful rock face pareidolia

How do optical illusions work?

Prehistoric ambiguous illusion

The history of optical illusions in art

Superior mirages

Inferior and Superior Mirages, and Fata Morgana

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:

Sexy Birch
Afro tree
Big dog
This Patio
Cat Accident
Magayon and Pangaronon
Snake cat
Blueberries
  • Pareidolia
  • Physical illusions
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Prehistoric snake

Prehistoric Snake

Rocks