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Memoires sur l'action mutuelle de deux courans electriques, sur celle exise entre un courant electrique et un amiant ou le globe terrestre, et celle de deux aimans l'un sur l'autre.
. Lus a l'Academie royale des Sciences. (Extrait des Annales de Chimie et de Physique, 15). (1820) (Paris , after 6 November 1820), 8°, 68 pp., 5 fold-out plates by Adam after Girad, in blue contemp. wrapper; annulated stamp on title.. The first edition, first offprint issue, of the first paper on the nature of electric current by the founder of electrodynamics. - - Like Hans Christian Oersted Andre Marie Ampere (1885-1836) was devoted follower of Kant who constructed his own Kantian philosophical system. Ampere's philosophy postulated "two levels of knowledge of the external world ... phenomena, presented to us directly through the senses, and .. noumena, the objective causes of phenomena" (DSB); this determined the form of his scientific discoveries, beginning in the fall 1820. Fascinated by Oersted's demonstration of the existence of electromagnetism, which had been reported by Francois Arago to an astonished Academie des Sciences on September 4, 1820, Ampere immediately set out to determine through his own experiments the exact relationship of electrical current-flow and magnetism. He read his fist report to the Academie des Sciences on September 18, 1820, and gave further reports on September 25, October 9, November 6, and in later sessions. In the present paper, "his first great memoir on electrodynamics" (DSB), probably written soon after November 6, the latest session of the Academie that is mentioned, Ampere describes the series of "classical and simple" experiments with which he first explored the interaction of two electric currents and of electric currents with magnets as well as with the earth's magnetic field. Ampere here "demonstrated for the first time that two parallel conductors, carrying currents traveling in opposite directions, they repeal each other" (Sparrow, p.33.) Hiss experiments provided empirical evidence for his new theory of magnetism as "electricity in motion". The memoir concludes with nine succinct statements of the nature of electric current that sum up his early work (DSB). - - Dibner Heralds of Science 62; Norman 64
      [Bookseller: Antiquariat für Medizin - Fritz-Dieter S]
Last Found On: 2014-10-29           Check availability:      ZVAB    


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