Ampere
the practical unit of electric current strength. It is the measure of the current produced by an electro-motive force of one volt through a resistance of one ohm. In electric quantity it is the rate of one coulomb per second.
AMPÈRE, ANDRÉ MARIE (äm-pār'), a French mathematician and physicist, after four years as a lecturer at Bourg was born at Lyons in 1775. In 1805 , and Lyons, he was called to Paris, where he distinguished himself as an able teacher in the Polytechnic School. In 1814 he became a member of the Academy of Sciences; in 1824 Professor of Experimental Physics in the Collégé de France. He died at Marseilles, June 10, 1836. Scientific progress is largely indebted to Ampère, especially for his electro-dynamic theory, and his original views of the identity of electricity and magnetism, as given in his "Collec- "Col tion of Electro-Dynamic Observations" (1822), and his "Theory of Electro- Dynamic Phenomena" (1830).