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Knowledge Cats Dirty Minds
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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.

Prehistoric ambiguous illusion

The history of optical illusions in art

Squirrel Stereogram

Stereograms

sorrowful rock face pareidolia

How do optical illusions work?

Jupiter

Jupiter close-up

Source/credit:  titsfortwat95

Upon closer inspection, you will notice that this is not Jupiter at all, but a picture of marshlands through binoculars or a telescope.

More optical illusions:

Square Fire Hydrant
Confusing pants
Bicycle wheels on a truck
Bald friends
Raw Chicken
Taj Mahal
Firefall
Find the black car
  • Pareidolia
  • Physical illusions
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Snapdragon seed pods looking like pixy skulls

Pixie Skulls

Flowers

A starry night sky optical illusion

A Starry Night Sky

Nature