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Knowledge Cats Dirty Minds
UFOs Mist Physics behind them

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?

Prehistoric ambiguous illusion

The history of optical illusions in art

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

A Giant on the Beach

A giant on the beach

Source/credit: tomatopickle

This guy is slacklining in the foreground of the picture. The rope is perfectly lined up with the footpath.

More optical illusions:

Gmork
Missing Chair Leg
Bicycle wheels on a truck
Up or Down?
Dog Log
Sand Bear
4 people
Erased Street Art
  • Pareidolia
  • Physical illusions
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Paperthin building

Paperthin Building

Buildings

Monkey selfie

Monkey Selfie

Animals