Produktart
Zustand
Einband
Weitere Eigenschaften
Gratisversand
Land des Verkäufers
Verkäuferbewertung
Verlag: Hachette Livre Bnf, 2018
ISBN 10: 2329216602ISBN 13: 9782329216607
Anbieter: Lucky's Textbooks, Dallas, TX, USA
Buch
Zustand: New.
Verlag: Legare Street Press, 2023
ISBN 10: 1022374931ISBN 13: 9781022374935
Anbieter: Ria Christie Collections, Uxbridge, Vereinigtes Königreich
Buch
Zustand: New. In.
Verlag: Legare Street Press, 2023
ISBN 10: 1020423676ISBN 13: 9781020423673
Anbieter: Ria Christie Collections, Uxbridge, Vereinigtes Königreich
Buch
Zustand: New. In.
Verlag: HACHETTE LIVRE, 2018
ISBN 10: 2329216602ISBN 13: 9782329216607
Anbieter: moluna, Greven, Deutschland
Buch
Zustand: New.
First edition. THE PREDICTION OF THE EXISTENCE OF NEPTUNE: THE RARE OFFPRINT. First edition, second offprint issue, very rare, of Le Verrier's mathematical prediction of the existence of Neptune, "undeniably one of the major scientific events of the nineteenth century" (Lequeux, p. 22). "Neptune, whose existence was visually confirmed in 1846, was the first planet to be discovered by mathematical rather than observational means. The discovery of Neptune not only represents the greatest triumph for Newton's gravitational theory since the return of Halley's Cometin 1758,but it also marks the point at which mathematics and theory, rather than observation, began to take the lead in astronomical research . The discovery of Neptune resulted from the need to develop a theory explaining the motion of the solar system's seventh planet, Uranus, the movements of which could not be completely accounted for by the gravitational effects of Jupiter and Saturn. Several astronomers since the planet's discovery in 1781 had suggested that the perturbations in Uranus's orbit could be caused by an as yet unknown trans-Uranian planet. However, the complex mathematics required for proving this hypothesis was so daunting that no one had attempted the task . Le Verrier had begun his own work on the Uranus problem in the summer of 1845, encouraged by François Arago, who by then had become France's leading astronomer. On November 19, 1845 Le Verrier published his first brief paper on the subject in the Comptes rendus de l'Académie des sciences, following it with three more equally brief papers published on June 1, August 31 and October 5, 1846. These short papers, totaling only 34 pages, were preliminary to the full and detailed account Le Verrier gave of his results in [the present work]; on p. 5 of that work Le Verrier referred to the Comptes rendus papers as 'publications partielles'" (). Le Verrier communicated the result of his investigations to several astronomers who had powerful instruments at their disposal. Among them was J. G. Galle, at the Berlin observatory, who was notified by Le Verrier on 23 September. Two days later he wrote to Le Verrier, announcing that he had observed the planet within 1° of Le Verrier's predicted position. "During the time that Le Verrier was conducting his research on the movements of Uranus, the English astronomer J. C. Adams was independently arriving at the same conclusions, which he communicated to the Astronomer Royal, George Biddell Airy. Adams's paper remained unpublished until 1847" (Norman 1343). OCLC lists nine copies of this issue; no copy listed on ABPC/RBH. "In his celebrated treatise on celestial mechanics, Pierre Simon de Laplace had developed mathematical expressions for the mutual perturbations exerted by the planets as a result of their gravitational attraction. Using these expressions, one could carry out numerical calculations to produce tables of the positions of the planets over time. The responsibility for doing so was claimed by the Bureau of Longitudes, headed by Laplace himself, though the work of actually performing these backbreaking calculations was distributed among several astronomers at the Bureau, including Delambre, Alexis Bouvard, and Burckhardt. Bouvard, Laplace's student, was assigned the most thankless task. In 1821, he began the laborious calculation of tables predicting the movements of the three giant planets: Jupiter, Saturn, and Uranus. The calculation of the tables of Jupiter and Saturn proved to be relatively straightforward. Uranus, however, proved to be highly intractable. Even after taking into account the perturbations exerted by the other planets, Bouvard could not derive a set of orbital elements that would successfully account for the movements of Uranus during the entire period over which it had been observed . "Resigned to defeat, Bouvard wrote in the introduction of his Tables of Uranus in 1821 that it would remain the task of future investigators to determine whence arose th.