Thursday, January 13, 2011

Difficulty of seeing changes in moving objects.

A nice demonstration by Suchow and Alvarez. Play the movie while looking at the small white speck in the center of the ring. At first, the ring is motionless and it's easy to tell that the dots are changing color. When the ring begins to rotate, the dots suddenly appear to stop changing. But in reality they are changing the entire time. Take a look.

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