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fine structure constant

fine structure constant is the alternative form of fine-structure constant.

Meaning of fine-structure constant

Noun

fine-structure constant (uncountable)

  1. (electrodynamics) The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force. Equal to about 1/137 = 0.0072973525.
    Synonyms:
    Sommerfeld's constant, electromagnetic coupling constant

Questions about fine structure constant

What is fine structure constant the alternative form of?
Fine structure constant is the alternative form of fine-structure constant.

Words near fine structure constant in the dictionary

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  5. fine structure
  6. fine structure constant
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Source and license

Adapted from Wiktionary: fine structure constant (page history and authors); fine-structure constant (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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