Spectrometer

//spɛkˈtɹɒm.ɪ.tə// noun

Definitions

Noun
  1. 1
    An optical instrument for measuring the absorption of light by chemical substances; typically it will plot a graph of absorption versus wavelength or frequency, and the patterns produced are used to identify the substances present, and their internal structure.
  2. 2
    spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer wordnet

Etymology

From spectro- + -meter.

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