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Senses Experiment: The Red, White, and Blue

Senses Experiment: The Red, White, and Blue

(Experimento: Rojo, blanco y azul)

What This Experiment Shows:

How your eyes' receptors (which are sensitive to certain colors) can get tired. When they don't work as usual, you may see an afterimage in colors that are different from the image you were looking at. An afterimage is when your eyes see something that isn't there.

What You Need:

  • The image of the yellow and blue flag below

What To Do:

  1. Stare at the yellow and blue U.S. flag for about 20 seconds.
  2. Then mouse over the flag image, which will make it disappear.
  3. What do you see in the white space?

How Can You Find Out More?

Your Eyes

Reviewed by: Eric H. Chudler, PhD
Date reviewed: August 2011





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