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Synopsis
Excerpt from An Introduction to Astronomy
An illustration will make the process clearer than an extended argument. Obviously, all men have observed moving bodies all their lives, yet the fact that a moving body, subject to no exterior force, proceeds in a straight line with uniform speed was not known until about the time of Galileo (1564 - 1642) and Newton (1643 When the result is once enunciated it is easy to recall many confirmatory experiences, and it now seems remarkable that so simple a fact should have remained so long undiscovered. It was also noted by Newton that when a body is acted on by a force it has an acceleration (acceleration is the rate of change of velocity) in the direction in which the force acts, and that the acceleration is proportional to the magnitude of the force. Dense bodies left free in the air fall toward the earth with accelerated velocity, and they are therefore subject to a force toward the earth. Newton observed these things in a large number of cases, and be inferred by induc tion that they are universally true. He focused particularly on the fact that every body is subject to a force directed toward the earth.
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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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- PublisherForgotten Books
- Publication date2020
- ISBN 10 0282112219
- ISBN 13 9780282112219
- BindingPaperback
- LanguageEnglish
- Number of pages509
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An Introduction to Astronomy (Classic Reprint)
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Paperback. Condition: New. Print on Demand. This book is a comprehensive introduction to astronomy. It starts with the basics of astronomy, including the history of astronomy, the celestial sphere, and the solar system, and then moves on to more advanced topics, such as the stars, the Milky Way, and the universe beyond. The book is written in a clear and engaging style, and it is illustrated with numerous photographs, diagrams, and tables. It is an excellent resource for anyone who wants to learn more about astronomy. The main focus of the book is on the universe beyond our solar system, and the author does an excellent job of explaining the complex concepts of astronomy in a way that is accessible to laypeople. The book also includes a number of thought-provoking insights into the nature of the universe, such as the idea that the universe is constantly expanding and that there may be life on other planets. Overall, this book is an excellent resource for anyone who wants to learn more about astronomy. It is well-written, informative, and thought-provoking. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9780282112219_0
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An Introduction to Astronomy (Classic Reprint)
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9780282112219
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An Introduction to Astronomy (Classic Reprint)
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9780282112219
Quantity: 15 available