Ampere, Andre Marie, the eminent French physicist, born in 1775. He early showed great mathematical abilities, and in 1802 wrote a treatise on the doctrine of chances as exemplified in gambling. In 1805 he obtained a post in a Polytechnic school, and in 1820 he was appointed professor of physics in the College of France, and devoted most of the rest of his life to the investigation of electrical and magnetic phenomena. He suggested the electric telegraph in 1822, and in 1826 published his theory of electro-dynamics based on the discovery of the mutual attraction and repulsion of currents. He may be regarded as having first distinguished kinematics from dynamics. He died in 1836 at Marseilles, and his name has been perpetuated as a measure of electricity.