born March 23, 1749, Beaumount-en-Auge, France
died March 5, 1827, Paris
French mathematician, astronomer, and physicist.
He is best known for his investigations into the stability of the solar system and the theory of magnetic, electrical, and heat wave propagation. In his major lifework he applied Newtonian gravitational theory to the solar system to explain deviations of the planets from the orbits predicted by the theory (1773). Laplace transform ; Laplace's equation .