Making White Light

Science of Art: Making White Light

Materials:

3 flashlights, red, green and blue cellophane or theater films, and a white background

Procedure:

  1. Color three flashlights with red, green, and blue cellophane.
  2. Shine them onto white paper or onto the white floor/wall.
  3. Allow the lights to overlap. See how many new colors you can make. Can you ever make white?

Result and Explanation:

You will quickly notice that whenever all three colors overlap, a white spot forms! White is made from all of the colors of the rainbow, and since Red, Green and Blue contain all of the primary colors, you see white. When colors mix they make different colors. Colors on a computer are generally some combination of red, green, and blue color mixtures.

Posted By Astrid

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