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Knowledge Cats Dirty Minds
Clouds Mist Animals

Knowledge

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

Superior mirages

Inferior and Superior Mirages, and Fata Morgana

Is this a bird or a rabbit?

Ambiguous illusions

Rainbows are illusions

Types of Optical Illusions

Flapping in the wind

Curtains flapping in the wind

Source/credit: Henu3gumb

These curtains are flapping in the wind. But your dirty mind may be reminded of something else.

More optical illusions:

Hole in Cat
Floor Color Creates Extra Dimension
Magnus the Impaled
Impossible woodwork
Snake cat
Tetanus Rainbow
Calm Lake
The Pensive Olive Tree
  • Pareidolia
  • Physical illusions
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Dog with bone

Bone

a dirty mind

Hidden cat

Cats