Originally written as part of his Principia Mathematica, Newton integrated Kepler's laws of planetary motion and Galileo's forays into the laws of gravity into a comprehensive understanding of the organization of the universe according to the law of universal gravitation. Includes an Introduction by one of the world's foremost authorities on Newton. Unabridged republication of the second 1731 edition published by William Dawson, London, 1969.
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Physics and Philosophy by Sir James H. Jeans A noted scientist illuminates the intertwined paths of philosophy and science from Plato to the present, and examines the transition from Newtonian classical mechanics to modern relativistic physics.
Discourse on Bodies in Water by Galileo Galilei, Thomas Salusbury This 1612 essay challenged Aristotelian physics by asserting that sunspots are actual spots on the surface of the sun or in its atmosphere, rather than satellites. Introduction. Explanatory Notes. Index.
Newton's Philosophy of Nature: Selections from His Writings by Sir Isaac Newton, H. S. Thayer A wide, accessible representation of the interests, problems, and philosophic issues that preoccupied the great 17th-century scientist, this collection is grouped according to methods, principles, and theological considerations. 1953 edition.