Newton's Principia

Newton's Principia, formally titled "Philosophiæ Naturalis Principia Mathematica," laid the foundation for classical mechanics. It explains how objects move and interact through three laws of motion: objects stay at rest or in uniform motion unless acted upon; acceleration depends on force and mass; and for every action, there's an equal and opposite reaction. He also described gravity as a universal force acting between masses, explaining planetary motions and tides. The Principia combined mathematical principles with observations, revolutionizing our understanding of the physical universe by establishing predictable laws that govern everything from falling apples to planetary orbits.