Letters On Astronomy Addressed to a Lady in Which the Elements of the Science
Letters On Astronomy Addressed to a Lady in Which the Elements of the Science
Denison Olmsted
The book Letters On Astronomy Addressed to a Lady in Which the Elements of the Science was written by author Denison Olmsted Here you can read free online of Letters On Astronomy Addressed to a Lady in Which the Elements of the Science book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Letters On Astronomy Addressed to a Lady in Which the Elements of the Science a good or bad book?
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Among these ques- tions, the determination of the return of comets, and the disturbances which they experience in their course, by the action of the planets near which they happen to pass, hold a prominent place. In 1826, the French Institute offered a prize for the determination of the exact time of the return of Halley's comet to its peri- helion in 1835. M. Pontecoulant aspired to the honor. " After calculations, " says he, " of which those alone who have engaged in such researches can estim...ate the extent and appreciate the fastidious monotony, I arriv- ed at a result which satisfied all the conditions propos- ed by the Institute. I determined the perturbations of Halley's comet, by taking into account the simulta- neous actions of Jupiter, Saturn, Uranus, and the Earth ; and I then fixed its return to its perihelion for the sev- enth of November. " Subsequently to this, however, M. Pontecoulant made some further researches, which led him to correct the former result ; and he afterwards COMETS.
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