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Monochromators
A monochromator is an instrument for isolating narrow portions of the spectrum. The spectrum of any light source is formed by a prism or grating, and an exit slit placed in the spectrum selects a narrow band of wavelengths for emission. By moving the spectrum of a source internally past the slit, the color of the emitted light can be varied at will.
Terms
  • monochromator Also known as monochromatic illuminator. An instrument for isolating narrow portions of the spectrum. The spectrum of any light source is formed by a prism or grating, and an exit slit placed in the spectrum selects a narrow band of wavelengths for...
  • monochromatic Composed of one color; having only one wavelength of radiation.
  • spectrum See optical spectrum; visible spectrum.
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