History of Physical Astronomy, From the Earliest Ages to the Middle of the 19th Century (Classic Reprint)
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| Hersteller: | Forgotten Books (Grant, Robert) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from History of Physical Astronomy, From the Earliest Ages to the Middle of the 19th Century The main object of the work here submitted to the reader is to exhibit a view of the labours of successive enquirers in establishing a knowledge of the mechanical principles which regulate the movements of the celestial bodies, and in explaining the various phenomena relative to their physical constitution which observation with the telescope has disclosed. It may, perhaps, be desirable to trace out briefly the plan I have pursued in attempting to execute this undertaking. The first part of the work, extending to the close of the thirteenth chapter, is devoted to the history of the Theory of Gravitation. In the first and third chapters I have endeavoured to give some account of the immortal discoveries by which Newton established this theory in its utmost generality. The researches of the learned Prof. Eigaud have recently disclosed some interesting details respecting the original publication of the Principia, of which I have not failed to avail myself in the execution of this portion of the work. The future history of Celestial Mechanics naturally admits of a division into two distinct periods. The first comprehends the researches of geometers from the time of Newton to the commencement of the nineteenth century. Towards the close of this period the analytical methods devised for the developement of the Theory of Gravitation had attained a high state of perfection, and the various phenomena which had seemed irreconcilable with its principles, were all satisfactorily accounted for. The second period embraces the further developement of the theory down to the present time. The third and following chapters to the ninth inclusive, are devoted to the first of the above-mentioned periods. The third chapter contains an account of the early researches of Euler, Clairaut, and DAlembert on the Problem of Three Bodies, and of the application of their respective solutions to the lunar theory. The difficulty which for some time attended the computation of the movement of the lunar apogee, was at length effectually removed by Clairaut, and the triumph of the Newtonian principles was practically exhibited in the construction of lunar tables by Mayer, which possessed sufficient accuracy to be employed with confidence in the solution of the great Problem of the Longitude. It is a curious fact that, in the original edition of the Principia, Newton gave the results of an investigation of the movement of the lunar apogee, which seemed to imply that he had treated the subject by a method of a sufficiently comprehensive character. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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