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Knowledge Cats Dirty Minds
Floors Landmarks Ghosts

Knowledge

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

Prehistoric ambiguous illusion

The history of optical illusions in art

Parallax effect

Parallax Effect

Rainbows are illusions

Types of Optical Illusions

Shadow

Black cat looks like a shadow

Source/credit: JoshuaForLong

 The shadow of the white cat is actually a black cat. 

More optical illusions:

Elvish Writing
Grid Illusion Shirt
How many pipes?
Fire demon
Dinosaur Bird
Magayon and Pangaronon
Headless Woman
A Giant on the Beach
  • Pareidolia
  • Physical illusions
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Invisible - viral photo of girl with mirror

Invisible

Mirrors

4 people but only 3 arms

4 people

People