ELECTROMAGNETIC ROTATION ESTABLISHED

AMPÈRE, ANDRÉ-MARIE & MICHAEL FARADAY - DESCRIBING AMPERE'S ROTATION APPARATUS.

Note sur unappareil à l'aide auquel on peut vérifier toutes les propriétés des conducteurs de l'électricité voltaique, découvertes par M. Ampère. (+) Suite de la Note sur un Appareil à l'aide duquel on peut vérifier toutes les propriétés de conducteurs de l'électricié voltaique, découvertes par M. Ampère. (+ Faraday:) Sur les Mouvemens électro-magnétiques et la théorie du magnetisme. (Traduit par Anatole-Riffault). (+ Savary, approuved by Ampere:) Notes relatives au Mémoire de M. Faraday.

Paris, Crochard, 1821.

Contemp. full cloth. Light wear to spine ends. Gilt lettering to spine. In: Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago.", Tome 18. 448 pp. and 6 folded engraved plates (4 of these belonging to the described papers). Ampère: pp. 88-106 + pp. 313-333 and 4 plates. Faraday: pp. 337-379. Savary: pp. 370-379. The plates depicts experimental arrangements and Ampère's initial Rotation Apparatus. The whole volume present.

Fisrt edition and first printings of the demonstrations of Ampere's new Equilibrium technique. When Faraday had completed his importent paper on Electro-magnetic motions (the paper offered here in the first French edition) he send it to Ampere.. Ampere invented the Rotation Apparatus in order to repeat Faraday's experiment on the electro-magnetic rotation. He produced an uninterrupted rotation, either of magnetic pole around a wire or of a wire around a magnetic pole. From these experiments originated a new theory of electricity and magnetism. - The third memoir is the First French edition of Faraday's famous paper "On some New Electro-Magnetical Motions, and on the Theory of Magnetism" (Quaterly Journal of Science, October 1821), in which is recorded for the first time the conversion of electrical into mechanical energy. It also contains the first notion of the "Line of Force". He employed a magnet and a wire with a flowing current, which causd each separately to rotate round the other. He concluded that a current-carrying wire is sorraunded by a circular "line of force". Oersted had spoken of the "electrical conflict" surrounding the wire and had noted that "this conflict performs circles".

Order-nr.: 41248