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Knowledge Cats Dirty Minds
Forced Perspective Refraction Snakes

Knowledge

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

Squirrel Stereogram

Stereograms

Is this a bird or a rabbit?

Ambiguous illusions

Rorscharch inkblot

What Optical Illusions Reveal about You

Transparent coffee cup

The transparent coffee cup is just an illusion

Photo by: jkvandersteen

This transparent coffee cup is a perfect physical illusion. The reflection of the saucer in the smooth surface of the cup completes the floral pattern nicely.

More optical illusions:

Puffy Face
Big Dog
Cat a log
Wind turbines
A Whale of a Cloud
Grid Illusion Shirt
Beautiful Caterpillar
Plane Crash
  • Pareidolia
  • Physical illusions
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Photo of a UFO in a storm with lightning in the background.

UFO in a storm

UFOs

 What does your dirty mind think of this unfortunately timed photo of Carlos Tevez and Rio Ferdinand during a match in 2010.

Unfortunately timed

a dirty mind