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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?

Rorscharch inkblot

What Optical Illusions Reveal about You

Prehistoric ambiguous illusion

The history of optical illusions in art

Eye of a tree

tree eye

Source/credit:hasmodia

The is a natural formation on a tree trunk that remarkably resembles an eye, a phenomenon known as pareidolia. The “eye” is formed by a knot or hollow in the tree, with the surrounding moss and bark creating the illusion of an eyelid and iris. 

More optical illusions:

Wind turbines
Aerial View of a Beach
Mysterious tree
Blueberries
Laurel the Tree
Jupiter
What big mouth you have!
A sorrowful rock
  • Pareidolia
  • Physical illusions
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milk splashing or dog with head in cup

Splash!

Dogs

cat plastic bag

Cat in the bag

Cats