 Jean le Rond d'Alembert

Jean le Rond d'Alembert (1717–1783) was a French philosopher, mathematician, and physicist, recognized as one of the prominent figures of the Enlightenment. He is best known for his contributions to mathematics and the sciences, particularly in mechanics and the development of calculus. D'Alembert is perhaps most famously known for formulating **d'Alembert's principle**, which is a fundamental principle of dynamics that relates to the motion of bodies.