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Inhaltsangabe
Elements of Astronomy is a comprehensive book written by Simon Newcomb in 1900. The book covers the fundamental principles of astronomy, including the history of astronomy, the solar system, celestial mechanics, and the stars and galaxies. It is aimed at students and enthusiasts who wish to gain a deeper understanding of the subject.The book begins with an introduction to the history of astronomy, covering the contributions of ancient civilizations such as the Greeks and Egyptians. It then moves on to discuss the modern understanding of the solar system, including the planets, asteroids, and comets. The book also covers the physics of celestial mechanics, including the laws of motion and gravity.The latter half of the book focuses on the stars and galaxies. It covers the properties of stars, including their classification, structure, and evolution. The book also discusses the Milky Way and other galaxies, including their structure and formation.Throughout the book, Newcomb provides clear explanations and illustrations to help readers understand the concepts. The book is written in a straightforward style that is easy to follow, making it accessible to readers of all levels of expertise.Overall, Elements of Astronomy is a valuable resource for anyone interested in astronomy, from students to amateur astronomers. Its comprehensive coverage of the subject and clear explanations make it a timeless classic in the field.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.
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Reseña del editor
This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.
Biografía del autor
Simon Newcomb (March 12, 1835 - July 11, 1909) was a Canadian-American astronomer and mathematician. He made important contributions to timekeeping as well as writing on economics and statistics and authoring a science fiction novel. He studied mathematics and physics privately and supported himself with some school-teaching before becoming a functionary in charge of calculations at the Nautical Almanac Office in Cambridge, Massachusetts. In 1861, he took advantage of one of the ensuing vacancies to become professor of mathematics and astronomer at the United States Naval Observatory, Washington D.C. he set to work on the measurement of the position of the planets as an aid to navigation, becoming increasingly interested in theories of planetary motion. By the time he visited Paris, in 1870, he was already aware that the table of lunar positions calculated by Peter Andreas Hansen was in error. While in Paris, he realised that, in addition to the data from 1750 to 1838 that Hansen had used, there was further data stretching as far back as 1672 and was able to use the “new” data to revise Hansen's tables. He was offered the post of director of the Harvard College Observatory in 1875 but declined, having settled that his interests lay in mathematics rather than observation. In 1877 he became director of the Nautical Almanac Office where he embarked on a program of recalculation of all the major astronomical constants. Despite fulfilling a further demanding role as professor of mathematics and astronomy at Johns Hopkins University from 1884, he conceived with A. M. W. Downing a plan to resolve much international confusion on the subject. By the time he attended a standardisation conference in Paris, in May 1896, the international consensus was that all ephemerides should be based on Newcomb's calculations. In 1878, Newcomb had started planning for a new and precise measurement of the speed of light that was needed to account for exact values of many astronomical constants, when he received a letter from A. Michelson who was also planning such a measurement. Thus began a long collaboration and friendship. In 1880, Michelson assisted at Newcomb's initial measurement with instruments located at Fort Myer and the United States Naval Observatory, then situated on the Potomac River. Though Michelson published his first measurement in 1880, Newcomb's measurement was substantially different. In 1883, Michelson revised his measurement to a value closer to Newcomb's.
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