1 nov 1687 ano - NEWTON

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1687
In his first book, "Principia", Newton defined the basic concepts of mechanics by elaborating the three laws of motion: every object continues in a state of rest or uniform motion in a straight line unless deflected by a force, the rate of change of motion of an object is proportional to the force acting on it, and to every action there is always an equal and opposite reaction. In book 3, Newton applied his theories of mechanics to problems of astronomy by demonstrating that these three laws of motion govern the planetary bodies as well as terrestrial objects. Integrated into his whole argument was the universal law of gravitation which explained why the planetary bodies did not go off in straight lines but continued in elliptical orbits. Newton's universal law of gravitation had enormous implications. Newton had demonstrated that one universal law, mathematical proved, could explain all motion in the universe. The secrets of the natural world could be known by human investigations. At the same time, the Newtonian synthesis created the concept of Newton's world machine in which it is believed that the universe was one huge, regulated, and uniform machine that operated according to natural laws in absolute time, space, and motion.

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