Tuesday, July 04, 2006

5 July 1687: Issac Newton Publishes 'Philosophiae Naturalis Principia Mathematica'

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Isaac Newton, painted by Godfrey Kneller 1689.
Image source: Wikipedia

Via Wikipedia.

The Philosophiae Naturalis Principia Mathematica (Latin: "mathematical principles of natural philosophy", often Principia or Principia Mathematica for short) is a three-volume work by Isaac Newton published on July 5, 1687. It contains the statement of Newton's laws of motion forming the foundation of classical mechanics as well as his law of universal gravitation. He derives Kepler's laws for the motion of the planets (which were first obtained empirically).

In formulating his physical theories, Newton had developed a field of mathematics known as calculus. However, the language of calculus was largely left out of the Principia. Instead, Newton recast the majority of his proofs as geometric arguments.

It is in the Principia that Newton expressed his famous Hypotheses non fingo ("I feign no hypotheses").

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