• Click on Prisms at this PhET simulation
• Adjust the slider to the laser light that gives you the
  • Reddest Red
  • Orange-est Orange
  • Yellowest Yellow
  • Greenest Green
  • Blue-est Blue
  • Violet-est Violet
• Enter the wavelength of your choices at this Google Form.

What we normally call white light is a mixture of all of the colors in the electromagnetic spectrum. These colors are usually abbreviated ROY G BIV. For this activity, we will look at an abbreviated spectrum of just RED, GREEN, nad BLUE light.

• What colors would remain if an object absorbed the following colors?
  • Red
  • Green
  • Blue
  • Red & Green
  • Green & Blue
  • Red & Blue
  • Red & Green & Blue

• What “primary color” did you pick for your tile? (RGB)
• What filtered light made your tile look “normal”?
  • (RGB, CMY)
• What filtered light made your tile look “weird”?
  • (RGB, CMY)

• What “secondary color” did you pick for your tile? (CMY)
• What filtered light made your tile look “normal”?
  • (RGB, CMY)
• What filtered light made your tile look “weird”?
  • (RGB, CMY)
• What filtered light made your tile look like a “primary color” tile?
  • (RGB, CMY)

If we divide the rainbow into three regions, we cold call them the Reds, the Greens, and the Blues. (Remember that there are many Reds, Greens, and Blues, and many blends, but let's simplify for now!)

• Can you think of any flags/teams/cartoon/comic characters that use a Red/Cyan color combination?
  • Superman
  • Memphis Grizzlies
  • Aquaman
  • Fantastic Four Human torch

• Can you think of any flags/teams/cartoon/comic characters that use a Green/Magenta color combination?
  • Hulk
  • Joker
  • Riddler
  • Barney
  • Green Goblin

• Can you think of any flags/teams/cartoon/comic characters that use a Blue/Yellow color combination?
  • Wolverine
  • X-men
  • Ukraine
  • Dominican Republic