Léon Foucault
= Léon Foucault
{c}
{title2=1819–1868}
= 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://mathshistory.st-andrews.ac.uk/Biographies/Foucault/Foucault.jpeg]
{title=Portrait of <Jean Bernard Léon Foucault>}
{width=240}