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Thesaurus: radio-frequency spectroscopy

The branch of spectroscopy concerned with the measurement of the intervals between atomic or molecular energy levels that are separated by frequencies from about 105 to 109 hertz, as compared to the frequencies that sepa…

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  1. n. The branch of spectroscopy concerned with the measurement of the intervals between atomic or molecular energy levels that are separated by frequencies from about 105 to 109 hertz, as compared to the frequencies that separate optical energy levels of about 6 × 1014 hertz.