= Léon Foucault
{c}
{title2=1819–1868}
{wiki}
= Jean Bernard Léon Foucault
{c}
{synonym}
A <physicist> appointed to the Paris Observatory in 1855 who developed <telescopes>.<Léon Foucault à l’Observatoire by Observatoire de Paris>[Léon Foucault à l’Observatoire, p. 2: appointed physicist in 1855; telescope development]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Foucault.jpg?width=250]
{title=Portrait of <Léon Foucault>}
{description=Muzelle - E. Pérot, as credited on Commons; portrait reproduced in Recueil des travaux scientifiques de Léon Foucault, Gauthier-Villars, Paris, 1878; Gallica digital reproduction. Commons claims public domain in the country of origin and jurisdictions with life-plus-70 terms or shorter. https://commons.wikimedia.org/wiki/File:Foucault.jpg[Source usage terms], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Foucault.jpg}
{width=250}
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