Measurement principle of spectroscopy for the study of
electromagnetic radiation absorbed and emitted by atoms.
Note:
Atomic spectra may be emission or absorption spectra.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 649 (https://doi.org/10.1515/pac-2019-0203)