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Knowledge

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

Squirrel Stereogram

Stereograms

How to create optical illusion photos (for social media)

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Three Rings Forced Perspective Illusion

Video credit: Dr Matt Pritchard

Apparent size is relative. It is connected to the distance of the object.

This fact can help in creating Forced Perspective videos like this one with three rings of different sizes.

More optical illusions:

Hole in Cat
Headless Man
Cross-stitch Cats
Cat Head
Bent over the desk
Flaming Hot Girl
Big Seagull
Big bottoms
  • Pareidolia
  • Physical illusions
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The shadow of this cameraman on the shirt of the man on the right creates a dirty optical illusion

Foreshadowing

a dirty mind