Sir Isaac Newton's Mathematical Principles of Natural Philosophy and His System of the World

Book Description
1686. Translated into English by Andrew Motte in 1729, this book is a complete volume of Newton's mathematical principles relating to natural philosophy and his system of the world. Newton, one of the most brilliant scientists and thinkers of all time, presents his theories, formulas and thoughts. Included are chapters relative to the motion of bodies; motion of bodies in resisting mediums; and system of the world in mathematical treatment; a section on axioms or laws of motion, and definitions.

Customer Review from Amazon.com:
Newton's "Principia" was the crowning achievement of 17th Century Natural Philosophy, bringing together the works of great thinkers like Galileo and Johanes Kepler. This great work supplied the momentum for the Scientific Revolution and dominated physics for over 200 years. Although it was later demonstrated to have limitations at the atomic level, the principles of Newtonian physics are still applicable to much of our everyday lives. The casual reader may find this book difficult to work through, however. Newton's three laws of motion are not stated in the language that is used in modern introductory physics texts. A good companion to this book is "Feynman's Lost Lecture" in which Richard Feyman demonstrates planetary motion using the same geometric techniques employed by Isaac Newton, but in a more clear, modern style.

Download Link:
Principia : Vol. 1 The Motion of Bodies
2.2MB
Principia: Vol. II: The System of the World
1.5MB

or in a single file:
Principia : Vol. 1&2
3.8MB