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Knowledge Cats Dirty Minds
UFOs Snakes Advertizing

Knowledge

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

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Parallax effect

Parallax Effect

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

Strained Expression

Credit: Isaac Cordal on Diminutos (via WaybackMachine)

This is a test for an urban installation projecting shadows with the city lighting, done by Isaac Cordal. The strained expression on the face was not an accident.

Here is another of his tests, posted on his WordPress site.

Isaac Cordal strainer art 

 

More optical illusions:

Ghost Boat
Gravel flower bed
Big dog
Absolutely impossible
The Invasion
Headless figure
Hovering Car
High-rise buidings
  • Pareidolia
  • Physical illusions
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These deadly stairs look wrong for a second, until you blink. If you can see it only in one way, just scroll up and down and you will see the other way appear.

Deadly stairs

Stairs

Penrhyn Castle in Wales looks like a swamp monster

Swamp monster

Buildings