Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 279
iverse attracts every otherparticle with a force which is proportional to the product oftheir masses, and which varies inversely as the square of thedistance between them. 147. The Importance of the Law of Gravitation. — Theimportance of a physical law depends upon the number of 232 AN INTRODUCTION… … Fig. 87. — Isaac Newton. Naturalis Principia Mathematica (The Mathematical Prin-ciples of Natural Philosophy), commonly called simply thePrincipia, Newton showed how every known phenomenonof the motions, shapes, and tides of the solar system could beexplained by the law of gravitation. That is, the…
Astronomy
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