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Knowledge Cats Dirty Minds
Cars AI Camouflage and Mimicry

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?

Forced perspective image Pisa tower

Forced Perspective

Parallax effect

Parallax Effect

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:

Cat Anus
North Sentinel Tribesman
Missing Chair Leg
Square shadow
Flying cat
Magnus the Impaled
Big Daddy
4 people
  • 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