October 26, 2011
You really can’t believe your eyes. Printed versions of illusions have been around for a long time. With computers, we have a tool for easily creating new illusions, such as the one below. It relies on the motion feature for animated GIF images. Go ahead, trick yourself:
Stare at the black + in the center of the picture for 10 seconds.
All the pink dots will slowly disappear, and you will only see a green dot rotating.