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Depth Reversion Animals Chairs

Knowledge

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

How to create optical illusion photos (for social media)

Squirrel Stereogram

Stereograms

Forced perspective image Pisa tower

Forced Perspective

The same image

concave and convex

Source/credit: EndersGame_Reviewer

The photos on the left and right are the same image, just rotated. The reason that we see the one on the left as concave and the one on the right as convex is because our brains assume that light is coming from above. 

More optical illusions:

Find the black car
Rainbow Road
Giant Christmas Cat
Giant in the Forest
Tsunami in Ohio
Eye of a tree
Rock Climbing
Sun Dogs
  • Pareidolia
  • Physical illusions
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Lego bed

A Lego bed

Objects

Pisa tower on the right leans more

Which one leans more?

Landmarks