HyperDic: fine_structure

English > 1 sense of the expression fine structure:
NOUNphenomenonfine structurethe presence of groups of closely spaced spectrum lines observed in the atomic spectrum of certain elements
English > fine structure: 1 sense > noun 1, phenomenon
MeaningThe presence of groups of closely spaced spectrum lines observed in the atomic spectrum of certain elements.
Example"the fine structure results from slightly different energy levels"
Part ofatomic spectrum(physics) a spectrum of radiation caused by electron transitions within an atom
Broaderspectrum lineAn isolated component of a spectrum formed by radiation at a uniform frequency

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