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Knowledge Cats Dirty Minds
Pareidolia Rocks Floors

Knowledge

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

Rorscharch inkblot

What Optical Illusions Reveal about You

Is this a bird or a rabbit?

Ambiguous illusions

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

This Patio

A slate patio

Source/credit: jgroves76

This slate patio really is flat.

More optical illusions:

Gravity hills
Pipe Cleaner Arms
Off-road Truck Capabilities
Tokyo View
Big dog
Disappearing trailer
Headless Woman
Cat's face
  • Pareidolia
  • Physical illusions
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Exotic golden bird

Exotic Bird

Birds

The Pyramid of Khafre

Geometric Shapes

Buildings