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Incoming links: Léon Foucault à l’Observatoire by Observatoire de Paris
Léon Foucault Created 2026-10-18 Updated 2026-10-31
A physicist appointed to the Paris Observatory in 1855 who developed telescopes.[ref]
Léon Foucault à l’Observatoire by Observatoire de Paris. Léon Foucault à l’Observatoire, p. 2: appointed physicist in 1855; telescope development
Portrait of Léon Foucault
. 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. Source usage terms, via Wikimedia Commons. Source.