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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.

Bezold effect fabric

Bezold Effect

Rainbows are illusions

Types of Optical Illusions

How to create optical illusion photos (for social media)

Poodle or Cocker Spaniel?

Poodle on the beach

Source/credit: frgn8

This case of pareidolia doesn’t need much explanation. But if you thought that this is actually a cocker spaniel, you are wrong. It is a poodle!

More optical illusions:

Big Daddy
4 people
Big Seagull
Nature's Dance
Larger than life
Dog Log
Dog head floating
Cat Head
  • Pareidolia
  • Physical illusions
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The monument to Karla Havlíček Borovský, a famous Czech journalist, poet and writer, was naturally enhanced by wasps in 2022.

Naturally enhanced

a dirty mind

90s Yellow Pages Ad

a dirty mind