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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.

Parallax effect

Parallax Effect

Squirrel Stereogram

Stereograms

Bezold effect fabric

Bezold Effect

Chili willies

Chili willies or peter peppers

Source/credit: Wikimedia

These chili willies are called Peter Peppers and grow in Texas, Louisiana and Mexico and are more spicy then the Jalapeño. That is, if you are willing to put it in your mouth…

 

More optical illusions:

Goblin spy on a plane
Transparent Car Key
Headless figure
Headless player
Elvish Writing
Lap Tiger
Fair Game
Underwater Waterfall
  • Pareidolia
  • Physical illusions
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sorrowful rock face pareidolia

A sorrowful rock

Nature

This eye of the tower is watching over Verona, from the 84 meter high Torre dei Lamberti.

The eye of the tower

Buildings