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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.

sorrowful rock face pareidolia

How do optical illusions work?

Is this a bird or a rabbit?

Ambiguous illusions

Rorscharch inkblot

What Optical Illusions Reveal about You

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:

Escher drawing IRL
Apartment on fire
Cargo in the sky
Up or Down?
Big dog
A Galaxy Far Away
A Lego bed
Grid Illusion Shirt
  • 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