OPTICS

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.
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How Kaleidoscopes Work

Kaleidoscopes have been fascinating people since the early 19th century. Whether you think of kaleidoscopes as toys or as works of art, no matter how often you look inside, you'll never see the same thing twice.

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  • Spectrum

    Spectrum

    Spectrum (plural: Spectra), the distribution of radiant energy arranged by wavelength, frequency, or some other measurable order. See more »

  • Vermilion

    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

    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

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

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