Tube Optical IllusionIf at first you don't succeed, then skydiving definitely is not for you.
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Tube Optical Illusion

Is the black spot growing?

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This optical illusion demonstrates how we see images three dimensionally.


Scroll down for the explanation.


Most people say that it does grow as you look at it.


Here we're providing a simple perspective optical illusion showing how the rings, as they get closer and closer together, give us the sense of a 3D tube going deeper and deeper. We do not currently have a good explaination why the black grows.

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