fine-structure constant

noun

The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force. Equal to about 1/137 = 0.0072973525.

Similar
Sommerfeld's constantelectromagnetic coupling constant

Meanings

nounfine-structure constant (uncountable)
  1. uncountableelectrodynamicsThe 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

Synonyms & antonyms

nounThe fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force. Equal to about 1/137 = 0.0072973525.

Similar
Sommerfeld's constantelectromagnetic coupling constant

Translations

Bengali সূক্ষ্ম-গঠন ধ্রুবক
  • সূক্ষ্ম-গঠন ধ্রুবক (śukkho-goṭhon dhrubok)fine-structure constant
Dutch fijnstructuurconstante
  • fijnstructuurconstantefine-structure constant
Finnish hienorakennevakio
  • hienorakennevakiofine-structure constant
French constante de structure fine
  • constante de structure finefine-structure constant
German Feinstrukturkonstante
  • Feinstrukturkonstantefine-structure constant
Portuguese constante de estrutura fina
  • constante de estrutura finafine-structure constant
Russian постоя́нная то́нкой структу́ры
  • постоя́нная то́нкой структу́ры (postojánnaja tónkoj struktúry)fine-structure constant
Spanish constante de estructura fina
  • constante de estructura finafine-structure constant
Swedish finstrukturkonstanten
  • finstrukturkonstantenfine-structure constant
Cite this entry
APA

fine-structure constant. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/fine-structure%20constant

MLA

“fine-structure constant.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fine-structure%20constant. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “fine-structure constant,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/fine-structure%20constant.

Source: fine-structure constant on Wiktionary, CC BY-SA 4.0.