Philosophiæ Naturalis Principia Mathematica

Philosophiæ Naturalis Principia Mathematica, usually called the Principia, is Isaac Newton's treatise on mechanics, published in Latin in London in 1687 with the support of Edmond Halley and the Royal Society. It set out the three laws of motion and the law of universal gravitation and used them to explain the orbits of planets, the tides and the motion of comets. It became a foundation of classical physics.