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REEVES, Hubert - VERY, Jacques - DAUPHIN-LEMIERRE, Eliane.
SOLEIL.
Genève-Paris, La Nacelle, 1992. petit in-4 oblong, 127 pp. entièrement illustre N/B et en couleurs, glossaire, relie cartonnage illustre plastifie.
Reference : 16005
Bel exemplaire. [P-33] Edition enrichie de deuxportraits d'Hubert REEVES par Raymond MORETTI.
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5 book(s) with the same title
Nouvelle Methode de calculer les Longitudes geographiques d'apres les Eclipses du Soleil ou d'apres les Occultations des Etoiles par la Lune. Mémoire qui a remporté le prix proposé par la Societe Royale des Sciences de Copenhague.
Copenhague, N. Möller et Fils, 1789. 4to. Uncut in blank wrappers. On good paper. Fine and clean. 24 pp.
First edition. - Poggendorff I:p.359.
Recherches sur L'Orbite de Mercure et sur ses Pertubations. Détermination de la Masse de Vénus et du Diamètre du Soleil" - [A CONFIRMATION OF THE GENERAL THEORY OF RELATIVITY]
(Paris, Imprimerie de Bachelier), 1843. 4to. Recent blue boards. 87, (1) pp. Clean and fine. In ""Journal de Mathématiques pures et appliquées"", tome VIII.
Scarce first separate edition of Le Verrier's provisional theory on the motion of Mercury, his studies of which eventually did much to demonstrate the validity of Einstein's Theory of Relativity. The separate edition - as we have it here - is paginated 1-87, while the periodical version is paginated 273-359.The planetary orbits should agree with the predictions of the General Theory of relativity, but as Einstein pointed out in his ""Erklärung der Perihelbewegung des Merkurs aus der allgemeinen Relativitätstheorie"" from 1915, the divergences predicted were too small to be observed, except in the case of the nearest planet Mercury, where the perihelion advance, according to the formula, reaches the value of 43"""" per 100 years, being in full agreement with the calculations of Le Verrier, who found this unexplained rest in the perihelion advance of Mercury per century, if the perturbations due to the other planets are deduced.- Einstein tells in a letter to a friend that for several days he was in a 'state of delirious joy' by this wonderful astronomical confirmation of his theory.""Le Verrier first began to study Mercury on the suggestion of Arago in 1840. Astronomers realized that Mercury's perihelion (the point at which the orbit of a planet is closest to the sun) advanced along its orbit at a rate of 566 seconds per century. Le Verrier calculated that, even when taking into account the forces exerted by other planets in the solar system, there still existed a discrepancy between calculation and observation. Le verrier's accurate calculations showed that the planet's perihelion...did indeed advance forty seconds of an arc per century more than could be accounted for by Newton's theory of gravitation, even after the minor pertubing effects of the other planets had been allowed for."" (Asimov). - Le verrier published these findings in the present work, carefully as to the mass of the planet, comparison with other orbits of planets and their perihelia. At the time, Le Verrier put down the discrepancy to mis-observation or mis-calculation.- Sparrow, Milestones of Science No. 133.
(BERNOULLI, JEAN (JOHANN) & BERNOULLI, DANIEL. - THE MECHANICS OF THE HEAVENS.
Reference : 42459
(1735)
Essai d'une nouvelle Physique celeste. Servant à expliquer les principaux Phenomenes du Ciel, & en particulier la cause physique de l'inclinaison des Orbites des Planetes par rapport au plan de l'Equateur du Soleil. Qui a partagé le Prix doub...
Paris, Imprimerie Royale, 1735. 4to. Fine recent marbled boards. Printed titlelabel on frontcover. (6),144 pp. and 1 double-page folded engraved plate. Johann B's paper: pp. (1-) 91. - Daniel B's papers: pp. (93-) 122 and pp. 123-144. A few marginal brownspots.
First edition of these prize winning papers by father (Jean) and son (Daniel). - Both papers deals with the cause of the inclination of the planetary orbits relative to the solar equator. - In Daniel's paper he put foreward the hypothesis of the existence of an atmosphere, resempling air, and rotating around the solar axis, resulting in an increasing inclination of the planetary orbits toward the equator of the sun. Daniel was the first importent Newtonian outside Great Britain. The problems faced here (by Daniel) are treated in Newtonian manner.The publication of these papers by father and son resulted in a controversy between the two, forcing Daniel to leave his fathers house. - Poggendorff I:161.
LE VERRIER, URBAIN JEAN JOSEPH. - A CONFIRMATION OF THE GENERAL THEORY OF RELATIVITY.
Reference : 42922
(1843)
Recherches sur L'Orbite de Mercure et sur ses Pertubations. Détermination de la Masse de Vénus et du Diamètre du Soleil"
(Paris, Imprimerie de Bachelier), 1843. 4to. No wrappers as extracted from ""Journal de Mathématiques pures et appliquées...Publié par Joseph Liouville"", tome VIII. Pp. 273-360. Clean and fine.
First appearance of Le Verrier's provisional theory on the motion of Mercury, his studies of which eventually did much to demonstrate the validity of Einstein's Theory of Relativity. The planetary orbits should agree with the predictions of the General Theory of relativity, but as Einstein pointed out in his ""Erklärung der Perihelbewegung des Merkurs aus der allgemeinen Relativitätstheorie"" from 1915, the divergences predicted were too small to be observed, except in the case of the nearest planet Mercury, where the perihelion advance, according to the formula, reaches the value of 43"""" per 100 years, being in full agreement with the calculations of Le Verrier, who found this unexplained rest in the perihelion advance of Mercury per century, if the perturbations due to the other planets are deduced.- Einstein tells in a letter to a friend that for several days he was in a 'state of delirious joy' by this wonderful astronomical confirmation of his theory.""Le Verrier first began to study Mercury on the suggestion of Arago in 1840. Astronomers realized that Mercury's perihelion (the point at which the orbit of a planet is closest to the sun) advanced along its orbit at a rate of 566 seconds per century. Le Verrier calculated that, even when taking into account the forces exerted by other planets in the solar system, there still existed a discrepancy between calculation and observation. Le Verrier's accurate calculations showed that the planet's perihelion...did indeed advance forty seconds of an arc per century more than could be accounted for by Newton's theory of gravitation, even after the minor pertubing effects of the other planets had been allowed for."" (Asimov). - Le verrier published these findings in the present work, carefully as to the mass of the planet, comparison with other orbits of planets and their perihelia. At the time, Le Verrier put down the discrepancy to mis-observation or mis-calculation.- Sparrow, Milestones of Science No. 133.
"JANSSEN, PIERRE JULES CÉSAR - THE DISCOVERY OF HELIUM IN THE SUN.
Reference : 44231
(1878)
Éclipse de Soleil du 18 Aout 1868. Rapport adressé par M. Janssen au Maréchal de France Président du Bureau des Longitude.
Paris, G. Masson, 1878. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: ""Annales de Chimie et de Physique"", 4e Series - Tome 15. 512 pp. a. 3 folded engraved plates. (The entire volume offered). Janssen's memoir: pp. 414-426.
First appearance of this milestone paper in chemistry, physics and astronomy, announcing the discovery of the helium lines in the spectrum of the sun. It was Lockyer in the same year that named it 'helium' for Helios, the Greek God of the Sun. Helium was not discovered on the earth before 1895 by William Ramsay, and it was Crookes who established its identity with the helium Janssen and Lockyer observed in the spectrum of the sun.""He Janssen) met immortality by travelling to India in 1868 to study the total eclipse. It was then that he observed the helium line and forwarded the spectral data to ockyer. He also noted the size of the solar prominences. The day after the eclipse he attempted to take their spectra again and succeeded despite the absence of the obscuring moon. he then announced jubilantly that it was the day after the eclipse that was the real eclipse day for him. Lockyer also reported this method of studying prominences without an eclipse....Like Lockyer he lived to see his observation of the helium line vindicated by Ramsay's discovery of that element on earth.""(Asimov).""This (the discovery of helium lines in the sun by Lockyer) was announced on the same day by the French astronomer Janssen, who was in India observing a total eclipse. As a result, the French government some ten years later struck a medallion showing the heads of both scientists.By that time, the two men had made a much more dramatic discovery at the same time, this time in cooperation. Janssen, studying the spectrum ofthe sun during the eclipse, had noted a fine line he did not recognize. he send a report on this to Lockyer, an acknowledges expert on solar spectra. Lockyer compared the reported position of the line with lines of known elements, concluding that it must belong to a yeat unknown element, possibly not even existing on the earth. He named the element, from the Greek word for the sun.""(Asimov).Parkinson ""Breakthroughs"" 1868 A. - The volume contains other notable papers by Dumas, Berthelot et al.
