radio-frequency spectrometer

radio-frequency spectrometer

[′rād·ē·ō ¦frē·kwən·sē spek′träm·əd·ər]
(spectroscopy)
An instrument which measures the intensity of radiation emitted or absorbed by atoms or molecules as a function of frequency at frequencies from 105 to 109 hertz; examples include the atomic-beam apparatus, and instruments for detecting magnetic resonance.
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