Changes

==Principia Mathematica==

==Principia Mathematica==

Newton avoided publishing his results, preferring to communicate them to close colleagues. It took [[Edmond Halley]] great efforts to convince Newton to write his opus magnum ''Philosophiae Naturalis Principia Mathematica'' ("Mathematical Principles of Natural Philosophy" written in Latin, it was called the ''Principia'') that appeared in 1687. A second expanded edition appeared in 1713. It was a work on [[Classical mechanics|mechanics]] that used Newton's new principle of universal gravitation to explain falling bodies on the earth and the motions of planets and comets in the heavens. The first part covers dynamics and includes Newton's three famous laws of motion. The second part concerns fluid motion; the third part deals with "the system of the world" ("De mundi systemate"), that is, the unification of terrestrial and celestial mechanics under the principle of gravitation and the explanation of Kepler's laws of planetary motion. The material was very advanced and difficult, especially since the underlying calculus was deliberately hidden from view. Scientists across Europe immediately recognized its importance and tried to read it.

Newton avoided publishing his results, preferring to communicate them to close colleagues. It took [[Edmond Halley]] great efforts to convince Newton to write his opus magnum ''Philosophiae Naturalis Principia Mathematica'' ("Mathematical Principles of Natural Philosophy" written in Latin, it was called the ''Principia'') that appeared in 1687. A second expanded edition appeared in 1713. It was a work on [[Classical mechanics|mechanics]] that used Newton's new principle of universal gravitation to explain falling bodies on the earth and the motions of planets and comets in the heavens. The first part covers [[dynamics]] and includes Newton's three famous laws of motion. The second part concerns fluid motion; the third part deals with "the system of the world" ("De mundi systemate"), that is, the unification of terrestrial and celestial mechanics under the principle of gravitation and the explanation of Kepler's laws of planetary motion. The material was very advanced and difficult, especially since the underlying calculus was deliberately hidden from view. Scientists across Europe immediately recognized its importance and tried to read it.

==Newtonianism==

==Newtonianism==