Sir Isaac Newton (1642-1727) was the greatest scientist of his time. This English physicist and mathematician established the modern study of optics. He was the first to articulate a concept of the force of gravity. In his “Philosophiae Naturalis Principia Mathematica” (“Mathematical Principles of Natural Philosophy”), published in 1687, Newton demonstrated the way in which the universal force of gravity – also referred to as weight – applied to all objects in the universe. Wait! There’s more!