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diffraction grating

Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A usually glass or polished metal surface having a large number of very fine parallel grooves or slits and used to produce optical spectra by diffraction of reflected or transmitted light.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a surface having a large number of closely spaced lines or slits; used to produce optical spectra by mutual interference

from the GNU version of the Collaborative International Dictionary of English

  • n. See under Grating.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum

Etymologies

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