Fine-structure constant: Difference between revisions

Revision as of 19:34, 10 January 2025

Revision as of 15:37, 19 January 2025

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== Quotes ==

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For historical reasons, {{mvar|α}} is known as the fine structure constant. Unfortunately, this name conveys a false impression. We have seen that the charge of an electron is not strictly constant but varies with distance because of quantum effects; hence {{mvar|α}} must be regarded as a variable, too. The value 1/137 is the asymptotic value of {{mvar|α}} shown in Fig. 1.5a.<ref>The asymptotic value of {{mvar|α}} ''for larger observation distances'', is intended here. Caption: Fig 1.5. Screening of the (a) electric charge and (b) the color charge in quantum field theory. Graph of Electron charge versus Distance from the bare e^-− charge. From: Halzen, F.; Martin, A.D. (1984). ''Quarks and Leptons: An Introductory Course in Modern Particle Physics''. John Wiley & Sons. ISBN 978-0-471-88741-6, p. 13.</ref> | Francis Halzen and Alan Martin (1984)<ref>

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When I die my first question to the Devil will be: What is the meaning of the fine structure constant?|Wolfgang Pauli <ref> {{Cite web |title=137 {{!}} The Fine Structure Constant, Physics - ArsMagine.com |url=https://arsmagine.com/others/fine-structure-constant/ |access-date=2024-06-28 |website=Ars Magine - Umetnost promišljanja i uobrazilje {{!}} אהיה |language=sr-rs}} </ref>|source=}}

== See also ==