Philosophiæ Naturalis Principia Mathematica

"Philosophiæ Naturalis Principia Mathematica," commonly known as the Principia, is Sir Isaac Newton’s groundbreaking work published in 1687. It lays the foundation for classical mechanics by describing the motion of objects and the forces acting upon them, especially gravity. Newton formulated three laws of motion and the law of universal gravitation, explaining how planets orbit the Sun, how objects fall, and how forces influence motion. This work revolutionized physics and astronomy, providing mathematical principles that remain fundamental to understanding the physical universe.