Philosophiæ Naturalis Principia Mathematica by Isaac Newton, often referred to as simply the Principia, is a work expounding Newton's laws of motion and his law of universal gravitation; in three books written in Latin, first published 5 July 1687.

Where was the Principia published?

Begun during his intensely productive years at Cambridge in the mid-1660s, the Principia, as it's often called, was published in 1687. It represents a transformational work, one of the world's most important scientific treatises.

When did Newton publish his work entitled Principia?

The title page of Isaac Newton's Philosophiae Naturalis Principia Mathematica (1687; Mathematical Principles of Natural Philosophy), the work in which the physicist introduced his three laws of motion.