Jean Perronet

Gaspard de Prony and the Prony Brake

Gaspard de Prony and the Prony Brake

On July 22, 1755, French mathematician and hydraulic engineer Gaspard Clair François Marie Riche de Prony was born. De Prony is best known for his efforts in the mechanization of calculations as well as for his invention of the eponymous “brake” to measure the performance of machines and engines. Mathematics vs a Legal Career Gaspard de Prony’s family name was Riche, the de Prony title having been bought by his parents. De…
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Jean-Rondolphe Perronet and the Bridges of Paris

Jean-Rondolphe Perronet and the Bridges of Paris

Jean-Rodolphe Perronet (1708-1794) On October 27, 1708, French architect and structural engineer Jean-Rodolphe Perronet was born. He is best known for his many stone arch bridges, among them his most popular work, the Paris Pont de la Concorde. Jean-Rodolphe Perronet was born in Suresnes, a suburb of Paris, the son of a Swiss Guardsman. At 17 he entered the architectural practice of Jean Beausire, “first architect” to the city of Paris, as…
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