London moment

noun

A quantum-mechanical phenomenon whereby a spinning superconductive metal sphere generates a magnetic field whose axis lines up exactly with the spin axis.

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Meanings

nounLondon moment (plural London moments)

plural London moments

  1. natural sciencesA quantum-mechanical phenomenon whereby a spinning superconductive metal sphere generates a magnetic field whose axis lines up exactly with the spin axis.
  2. natural sciencesThe magnetic moment of any rotation of any superconductor, caused by the electrons lagging behind the rotation of the object.

Origin

Named for the physical scientist Fritz London, and moment as in magnetic moment.

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Cite this entry
APA

London moment. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/London%20moment

MLA

“London moment.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/London%20moment. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “London moment,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/London%20moment.

Source: London moment on Wiktionary, CC BY-SA 4.0.