Definition of fine-structure constant in English:

fine-structure constant

Syllabification: fine-struc·ture con·stant

noun

Physics
A fundamental and dimensionless physical constant, equal to approximately 1/ 137, that occurs in expressions describing the fine structure of atomic spectra.
More example sentences
  • Some of these constants, such as the fine-structure constant, are dimensionless and are not expressed in terms of units.
  • The researchers concluded that the fine-structure constant might well be constant, and that the variation seen in the prior work was highly unlikely.
  • Even atomic clocks can detect drifts in the fine-structure constant only over days or, at most, years.

More definitions of fine-structure constant

Definition of fine-structure constant in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day conspicuous
Pronunciation: kənˈspikyo͞oəs
adjective
standing out so as to be clearly visible