Order of magnitude

English

Etymology

18th century, in the sense "magnitude (brightness class) of a star", informed by the Greek Template:M (Ptolemy).

Noun

1. Template:Lb The class of scale or magnitude of any amount, where each class contains values of a fixed ratio (most often 10) to the class preceding it.

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   Template:Hyper

   • 2011, Enrico Fermi, Wikisource (translator), Concerning a Contradiction between the Electrodynamic and Relativistic Theory of Electromagnetic Mass, 1922, Enrico Fermi, Über einen Widerspruch zwischen der elektrodynamischen und relativistischen Theorie der elektromagnetischen Masse, Physikalische Zeitschrift, v 23, pp 340-344,

     However, we notice that although this contraction is of order of magnitude $v^2:c^2$, it changes the most important terms of electromagnetic mass, i.e, the rest mass.

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Translations

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See also

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