London moment
Noun
Meaning
(physics) A quantum-mechanical phenomenon whereby a spinning superconductive metal sphere generates a magnetic field whose axis lines up exactly with the spin axis.
(physics) The magnetic moment of any rotation of any superconductor, caused by the electrons lagging behind the rotation of the object.
Source: en.wiktionary.orgExamples
A precession, or tilt, in the orientation of the rotor causes the London moment magnetic field to shift relative to the housing.
London moment A London moment gyroscope relies on the quantum-mechanical phenomenon, whereby a spinning superconductor generates a magnetic field whose axis lines up exactly with the spin axis of the gyroscopic rotor.
London moment Conversely, a spinning superconductor generates a magnetic field, precisely aligned with the spin axis.