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mass spectrograph

an instrument for analyzing ionized particles by passing them through electric and magnetic fields, typically designed to focus particles of equal mass to a point where they are detected: used esp. to determine the abundance of chemical compounds or isotopes

See mass spectrograph in American Heritage Dictionary 4

noun
An instrument used to determine the masses of atoms or molecules, in which a beam of charged particles is passed through an electromagnetic field that separates particles of different masses. The resulting distribution or spectrum of masses is recorded on a photographic plate.

Related Forms:

  • mass spectrography noun

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