Optics is the study of the properties and behavior of light. In this section you can learn about everything from holograms to lasers and lenses.

How Lasers Work

Lasers are used in CD players, dental drills, eye surgery, and even tattoo removal. But what exactly is a laser? There are numerous types, but all lasers work basically the same way. Learn how they generate such concentrated beams of light.

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  • Vermilion


    Vermilion, a bright scarlet pigment used to make paint and to color rubber and other substances. See more »

  • Violet (color)

    Violet (color)

    Violet, a reddish-blue color. The light rays that produce it have the shortest wavelength of any in the visible spectrum. See more »

  • White


    White, the color of a substance that reflects all the colors of sunlight. It can also be produced by a mixture, in equal proportions, of the optical primaries because these colors (violet-blue, green, and orange-red) can be combined to produce all other colors. See more »

  • Yellow


    Yellow, one of the pigment primary colors. Yellow occurs between green and orange in the solar spectrum. See more »

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