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fine structure

[fahyn] /faɪn/
noun, Physics.
1.
a group of lines that are observed in the spectra of certain elements, as hydrogen, and that are caused by various couplings of the azimuthal quantum number and the angular momentum quantum number.
Origin of fine structure
1915-1920
First recorded in 1915-20
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for fine structure
Historical Examples
  • Church a fine structure and furnished in the neatest manner.

    History of Linn County Iowa Luther A. Brewer
  • In one flash there had been overthrown the fine structure which he had built about her in his thoughts.

    The Snow-Burner Henry Oyen
  • This fine structure was recently built and cost the company $40,000.

    The Pullman Boycott W. F. Burns
  • The castle that crowned the hilltop had been a fine structure in its day.

    The Car That Went Abroad

    Albert Bigelow Paine
  • So, after all, there was a crack in the fine structure of Jurgis' faith in things as they are.

    The Jungle Upton Sinclair
  • On it stands the large church, which is not yet completed, but promises to be a fine structure.

    Visit to Iceland Ida Pfeiffer
  • The Theatre Royal is a fine structure capable of accommodating a thousand persons.

    Under the Southern Cross Maturin M. Ballou
  • This is now a fine structure of four clear spans of more than 60 feet, supported by concrete piers and abutments.

    The Story of the Cambrian C. P. Gasquoine
  • It is a fine structure, two hundred feet wide and seventy-five feet high, supported by Doric columns.

  • This fine structure is a railroad and wagon bridge and affords all necessary facilities for the movement of military stores.

    Ocean to Ocean on Horseback Willard Glazier
British Dictionary definitions for fine structure

fine structure

noun
1.
the splitting of a spectral line into two or more closely spaced components as a result of interaction between the spin and orbital angular momenta of the atomic electrons Compare hyperfine structure
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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