ampère andré marie babinet (2 Ergebnisse)

Couverture rigide. Zustand: Très bon. Edition originale. Demi chagrin moderne. Un volume in-8 (207x132 mm), (4)-91-(1 bl.)-ii pages. Des rousseurs. Edition originale de ce texte fondateur sur l'électromagnétisme. C'est dans cet ouvrage qu'Ampère (1775-1836) présente pour la première fois (pp. 26-27) sa célèbre règle pour déterminer le sens de déviation d'une aiguille aimantée placée près d'un courant électrique. Cette règle avait été énoncée indépendamment la même année par Oersted dans une obscure publication danoise de la même année. Exemplaire bien complet du dernier feuillet (table et errata) qui manque habituellement. Rare tiré à part originellement paru en supplément à la traduction française par Jean-René-Denis-Alexandre Riffault de la cinquième édition du Système de chimie de Thomas Thomson. References : Mottelay [p.482 : "a very valuable treatise"]. ___________________________________________________________________________________ ______________________________ENGLISH_DESCRIPTION : Moder quarter chagreen. 8vo (207x132 mm), (4)-91-(1 bl.)-ii pages. Foxings. First edition, separately-paginated offprint of this early publication on electricity and magnetism. It was in this work that Ampère (1775-1836) first presented his famous rule for determining the direction of deflection of a magnetized needle placed near an electric current. A complete copy with the last leaf (table and errata) which is often missing. The 'Exposé' is an offprint from the Supplement to the French translation of Thomas Thompson's System of Chemistry. References : Mottelay [p.482 : "a very valuable treatise"]. 240g.

Paris, Méquignon-Marvis, 1822, 8°, (3), 91, (II) pp., 33 Fig., untrimmed in contemporary brochure; preserved in halfleather book box; fine copy. First Edition of a scare and early publication on electricity and magnetism, "A very valuable Treatise' (Mottelay). 'In a four page circular letter, dated Copenhagen, July 21st, 1820, H.C. Oersted communicated his great discovery that a closed voltaic circuit exerts forces on an adjacent magnetic needle. In more modern language: a current-carrying electric circuit gives rise to magnetic forces in its surroundings. Oersted had found the long sought affinity between electricity and magnetism' (Ekelöf, Catalogue of Books and Papers in Electricity and Magnetism p. 286). 'Scarcely had the news of Oersted's discovery reached France, when a French philosopher, Ampère, set to work to develop the important consequences which it involved. Physicists had long been looking for the connection between magnetism and electricity, and had, perhaps, inclined to the view that electricity was somehow to be explained as a magnetic phenomenon. It was, in fact, under the influence of such ideas, that Oersted was led to his discovery. Ampère showed that the explanation was to be found in an opposite direction. He discovered the ponderomotive action of one electric current on another, and, by a series of well-chosen experiments, he established the elementary laws of electro-dynamic action, starting from which, by a brilliant train of mathematical analysis, he not only evolved the complete explanation of all the electro-magnetic phenomena observed before him, but predicted many hitherto unknown. The results of his researches may be summarized in the statement that an electric current, in a linear circuit of any form, is equivalent in its action, whether on magnets or other circuits, to a magnetic shell bounded by the circuit, whose strength at every point is constant and proportional to the strength of the current. By his beautiful theory of molecular currents, he gave a theoretical explanation of that connection between electricity and magnetism which had been the dream of previous investigators . "Oersted", remarks Babinet, "was the Christopher Columbus of magnetism; Ampère became its Pizarro and its Fernando Cortez"' (Mottelay, Bibliographical History of Electricity and Magnetism p. 474). Ampère's collaborator in the present publication, Jacques Babinet, 'did excellent work in different areas of physics. He was an early advocate of the wave theory of light [and] produced important results in the theory of refraction' (Ekelöf p. 287). An additional interesting aspect of the present paper is a first outline of Ampère's ideas concerning an electric telegraph (p. 71). The work is in fact an offprint from the Supplement to the French translation of Thomas Thompson's System of Chemistry: Système de Chimie. Traduit . par J. Riffault. The supplement is entitled: Supplément . présentant ce qui a été fait de nouveau dans cette science . depuis l'époque (1819) où cette traduction a paru, Paris 1822 (see Cole 1283). In the supplement the text of Ampère and Babinet occupies pp. 163-256. Overmier and Senior p. 127; not in Gartrell or Wheeler Gift.