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Knowledge Cats Dirty Minds
Forced Perspective Reflection Nature

Knowledge

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

The Dress blue black white gold

Color Constancy Illusions

Rorscharch inkblot

What Optical Illusions Reveal about You

How to create optical illusion photos (for social media)

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:

Rainbow Road
Skywalker
Floating cat head
Skydiving Corgi
Door handle
Exotic Bird
How many?
Big women
  • 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