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hyperfine structure

[hahy-per-fahyn, hahy-] /ˈhaɪ pərˈfaɪn, ˌhaɪ-/
noun, Physics.
1.
the splitting of the lines of an atomic spectrum, produced by the angular momentum of the nucleus of the atom.
Compare fine structure.
Origin of hyperfine structure
1925-1930
First recorded in 1925-30; hyper- + fine1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for hyperfine structure

hyperfine structure

/ˈhaɪpəˌfaɪn/
noun
1.
the splitting of a spectral line of an atom or molecule into two or more closely spaced components as a result of interaction of the electrons with the magnetic moments of the nuclei Compare fine structure See also Zeeman effect
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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