Revolving Circles

Motion 15 August 2012 0 Comments

Look at the black dot in the center of this image and move your head closer to your screen and then back again.  Do the outer circles appear to be moving?

Revolving Circles

This illusion, known as the Pinna illusion, was the first visual illusion to show a rotating motion effect.  It was discovered by Dr. Baingio Pinna.

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