Lecture on the navigators Chabert De Cogolin, d'Entrecasteaux and Dumont D'urville by Philippe Dutarte, author of "Les instruments de l'astronomie ancienne" and member of the "Science en Seine et Patrimoine" association.
From Chabert de Cogolin to Dumont d'Urville, this lecture offers a journey to the heart of the great scientific advances that enabled navigators to measure longitude at sea. Through emblematic expeditions that set out from Toulon, Philippe Dutarte traces the evolution of astronomical methods and the rise of marine chronometers in the XVIIIᵉ and XIXᵉ centuries.
