Louis Bertrand Castel

Who was Louis Bertrand Castel?

Louis Bertrand Castel was a French mathematician born in Montpellier, and entered the order of the Jesuits in 1703. Having studied literature, he afterwards devoted himself entirely to mathematics and natural philosophy. He wrote several scientific works, that which attracted most attention at the time being his Optique des couleurs, or treatise on the melody of colors. He also wrote Traité de physique sur la pesanteur universelle des corps, Mathématique universelle, and a critical account of the system of Sir Isaac Newton in 1743.