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Knowledge Cats Dirty Minds
Clouds Landmarks Ambiguous

Knowledge

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

Rainbows are illusions

Types of Optical Illusions

Is this a bird or a rabbit?

Ambiguous illusions

The Dress blue black white gold

Color Constancy Illusions

Kylie with a giant teddy bear

Kylie minogue with a giant teddy bear

Source/credit: Kylie Minogue

This innocent photo of Kylie Minogue holding a giant teddy bear was banned. After receiving the gift at a concert (back in 2010), she posted pictures of the moment on her Facebook page. Can you see why Facebook took it down?

More optical illusions:

Hidden ad in advertisement page
Grumpy tree
Flying cat
A Festival for Ants
Howling Wolf
Mysterious tree
Hand through a cat
Door handle
  • Pareidolia
  • Physical illusions
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This baby ostrich looks so fluffy

Baby Ostrich

Birds

This fire demon signals the apocolypse

Fire demon

Nature