• word of the day

    diffraction grating

    diffraction grating - Dictionary definition and meaning for word diffraction grating

    Definition
    (noun) 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
    Synonyms : grating

Word used in video below:
text: there's a grating on the wall which
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