MATHEMATICAL

PRINCIPLES

OF NATURAL

PHILOSOPHY.

original: "Philosophiæ Naturalis Principia Mathematica." In the 18th century, the term "Natural Philosophy" referred to the study of nature and the physical universe, the field we now call "physics." This book is widely considered one of the most important works in the history of science.

BY THE AUTHOR

SIR ISAAC NEWTON, Knight

original: "Isaaco Newtono, Eq. Aur." The Latin abbreviation "Eq. Aur." stands for Eques Auratus (Golden Knight), the formal designation for a knight bachelor.

Third edition, enlarged and corrected.

L O N D I N I:

At the house of William and John Innys, printers to the Royal Society.

The Royal Society, founded in 1660, is the national academy of sciences for the United Kingdom. Newton served as its President for 24 years.

1726.