Phrase guide
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noun
A dimensionless quantity, denoted by η, used in nuclear astrophysics in the calculation of reaction rates between two nuclei and in the definition of the astrophysical S-factor.
Definition source: English Wiktionary via Wiktextract
Topics: natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Named after German physicist Arnold Sommerfeld.
