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Knowledge Cats Dirty Minds
Food Mirage Mist

Knowledge

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

Forced perspective image Pisa tower

Forced Perspective

Rainbows are illusions

Types of Optical Illusions

Rorscharch inkblot

What Optical Illusions Reveal about You

Cat a log

Find the cat
Source/credit: waterhauler

The cat looks like a piece of firewood.
Middle stack, second piece of firewood from the top is not made of wood, but a light-orange tabby cat.

More optical illusions:

Ominous bird
180 degrees
Enormous cat napping
Flying Dutchman
Square Fire Hydrant
One-Punch Cat
Sunken police car
Eye of a tree
  • Pareidolia
  • Physical illusions
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Street in Macau

The Invasion

Buildings

Elvish writing

Elvish Writing

Objects