Michael e german (7 Ergebnisse)
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Taschenbuch. Zustand: Neu. Neuware - Originally published in hardcover in 2007.
Sechste Reihe von Experimental-Untersuchungen über Elektricität. (564-660) + Siebente Reihe von Experimental-Untersuchungen über Elektricität. (661-874)
"FARADAY, MICHAEL. - THE "LAW OF ELECTRO-CHEMICAL EQUIVALENTS", THE GERMAN VERSION.
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Leipzig, Barth, 1834. Contemp. hcalf., raised bands, spine gilt. Spine with light wear. in. "Annalen der Physik und Chemie. J.C. Poggendorff", Zweite reine, 3. bd.VIII,558,(4) pp. and 5 plates. (Entire volume offerd). Faradays papers: pp. 149-189 (Sixth series) + pp. 301-331 a. 481-520 (Seventh series). Internally clean and fine…, printed on good paper. First appearance in German - prepared by Faraday himself for publication in Annalen - of 2 historical papers in chemistry and physiscs in which Faraday in the first detects a new recombination-effect in electrolysis and in the second we have the MILESTONE PAPER in which Faraday announces the discoveries of further laws of electrochemistry, stating the general relations of electricity to chemistry and introducing new terms with precise meanings. The first part of the paper introduces his new terminology, giving the words a limited and precise meaning. These words, devised with the assistance of William Whewell, are now familiar to all chemists, electrode, anode, cathode, ion, anion, and cation. He also introduces the "Volta-electrometer", and arrives at the "Law of electro-chemical equivalents". The paper offered is one of Farday's most famous papers."Another section of the paper is devoted to a closer examination of the law of constant electrochemical action with respect to water and to the development of a gas electrometer to measure quantities of electricity. Faraday's "Volta-electrometer" provided the first practical means for the quantitative measurement of electricity." (Source Book in Chemistry p. 280-81).The Sixth series: "In the course of his experimental investigations of a general and importent law of electro-chemical action, which required the accurate measurement of thegases evolved during the decomposition of water and other substances, the author was lead to the detection of a curious effect, which had never been previously noticed, and of which the knowledge, had he before possessed it, would have prevented many of the errors and inconsistencies occurring in the conclusions he at first deduced from his earlier experiments. The phenomena observed was the gradual recombination of elements which had been previously separated from each other by voltaic action. This happened when, after water had been decomposed by voltaic electricity, the mixed gases resulting from such decomposition were left in contact with the platina wires or plates, which had acted as poles" for under these circumstances they gradually diminished in vo.umes, water was reprioduced, and at lust the whole of the gases disappeared."(Abstract) - Faraday explains the causes of this recombination.
Experimental-Untersuchungen über Elektricität. (Frei übersetzt aus dem Philosop. Transact. f. 1832). (Erste-) Zweite Reihe. (§ I-V). (I. Vertheilung elektrischer Ströme. II. Electricitätserregung durc Magnetismus. III. Neuer elektrischer Zustand der M.
"FARADAY, MICHAEL. - THE DISCOVERY OF ELECTRO-MAGNETIC INDUCTION (PMM 308) - GERMAN VERSION.
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Leipzig, Johann Ambrosius Barth, 1832. Contemp. hcalf., raised bands, gilt spine. Light wear along edges. In "Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff", Band 25. (Entire volume offered). VIII,648 pp. and 6 folded engraved plates. Small stamps on verso of titlepage and plates. Faraday's papers: pp. 91-142 a. pp.…142-186. with 3 folded engraved plates. Clean and fine. First German editions of the 2 first memoirs of Faradays groundbreaking researches on electricity, constituting the first 2 papers of his "Experimental Researches in Electricity", and containing his fundamental discovery of electromagnetic induction, THE FOUNDATION OF NEARLY ALL THE ELECTRICITY IN USE TODAY. In 1820 Oersted had generated magnetism from electricity, Faraday here finds the opposite effect, generating electricity by magnetism. He also described the first electrical generator (second paper). THESE PAPERS ARE SOME OF THE GREAT CLASSICS OF CHEMISTRY AND PHYSICS."Faraday demonstrated this theory involving the lines of force.by inserting a magnet into a coil of wire attached to a galvanometer. While the magnet was being inserted or removd, current flowed through the wire. If the magnet was held stationary and the coil moved over it one way or the other, there was current in the wire. In either case the magnetic lines of force about the magnet were cut by the wire.If the magnet and coil were both held motionless, whether the magnet was within the coil or not, there was no current.Faraday hd thus discovered electricalinduction.It was to lead to great things, but this was not apparent."(Asimov)."Although his discovery of the electric motor and the dynamo was almost entirely identical to his theoretical discoveries, it laid the foundation of the modern electrical industry - electric light and power, teælephony, wireless telegraphy, televison etc. - by providing for the production of continous mechanical motion from an electrical source, and vice versa." (PMM, 308).Horblit, 29 - Milestones, 62. - Dibner, 64. - PMM, 308.The volume contains further notable papers. Elie de Beaumont "Zweiter geologischer Brief.an A.v. Humboldt über die relative Alter der Gebirgszüge", pp. 1-58 a. 2 plates (one handcoloured), papers by Döbereiner, E. Lenz, Moser, Mitscherlich, de Saussure, J. Dumas, F.E. Neumann, Gay-Lussac, Johannes Müller "Beobachtungen zur Analyse der Lymphe, des Bluts und des Chylus", pp. 513-590.
Ueber electrisch-magnetische ewegungen, und die Theorie des Magnetismus" von Faraday, chem. Assistenten in d. Roy. Inst. (geschrieben London d. 11 Sept. 1821: mit Anmerkungen von einem Freunde des Hrn Ampère. Frei bearbeitet und mit einigen Erläuterun.
"FARADAY, MICHAEL. - THE FIRST ELECTRIC MOTOR - INTRODUCING "LINES OF FORCE" AND THE UNIVERSE OF "FIELDS" (GERMAN EDITION).
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Leipzig, Johann Ambrosius Barth, 1822. Without wrappers as extracted from "Annalen der Physik und der Physikalischen Chemie. Hrsg. Ludwig Wilhelm Gilbert", Bd. 71. Titlepage to vol. 71, pp. 124-171 a. pp. 172-176 and 1 folded engraved plate showing experimental apparatus. Clean and fine. First German edition of Faraday's famous…paper "On some new Electro-Magnetical Motion, and on the Theory of Magnetism. By Michael Faraday, Chemical Assistant in the Royal Institution. (1821)", recording one of the most influential discoveries in physics in the 19th Century, as Faraday here, as the very first, showed how to CONVERT THE ELECTRICAL AND MAGNETIC FORCES INTO CONTINUAL MECHANICAL MOVEMENT, thus creating the first electric motor, using the principle of electromagnetic rotation. In the first paper he introduced for the first time the concept of "LINE OF FORCE" and hereby deliniating "a picture of the universe as consisting of fields of various types, one that was more subtle, flexible, and useful than the purely mechanical picture of Galileo and Newton. The FIELD UNIVERSE was to be recognized with Maxwell half a century later and with Einstein, after an interval of another halfcentury."(Asimov)."Ever since Hans Christian oersted's announcement of the discovery of electromagnetism in the summer of 1820, editors of scientific journals had been inundated with articles on the phenomenon. Theories to explain it had multiplied, and the net effect was confusion. Were all the effects reported real ? Did the theories fit the facts ? It was to answer these questions that Phillips turned to Faraday and asked him to review the experiments and theories of the past months and separate truth from fiction.Faraday agreed to to undertake a short historical survey.His entusiasm was aroused in September 1821, when he turned to the investigation of the peculiar nature of the magnetic force created by an electrical current. Oersted had spoken of the "electrical conflict" surrounding the wiree and had noted that "this conflict performs circles".Yet as he experimented he saw precisely what was happening. Using a small magnetic needle to map the pattern of magnetic force, he noted that oneof the poles of the needle turned in a circle as it was carried around the wire. He immediately realized that a single magnetic pole would rotate unceasingly around a current-carrying wire so long as the current flowed. He then set about devising an instrument to illustrate this effect. His paper "On some new Electro-Magnetical Motion, and on the Theory of Magnetism" appeared in the 21 October 1821 issue of the "Quarterly Journal of Science" (The paper offered in the first German edition). It records the first conversion of electrical into mechanical energy. It also contained the first notion of the line of force."(DSB IV, pp. 533).
