October 11, 2008

Optical Illusion

A student of mine sent me this exciting optical illusion.

Before you click on the link below to see the illusion, follow what the National Institute of Environmental Health Sciences website says to do:

"If you stare at the black "+" in the center, the moving dots turns to green.

Now, concentrate on the black "+" in the center of the picture. After a short period, all the pink dots will slowly disappear, and you will only see only a single green dot rotating."

CLICK HERE to get the pink dots to rotate.

Very cool!

Image source: National Institute of Environmental Health Sciences

1 comment:

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