Isaac Newton – Died 20.03.1727 (b. 1643), English physicist and mathematician. Developed the law of universal gravity and other laws of mechanics. He formulated the principle of conservation of momentum and angular momentum. He created the calculus of variations. 10. 12. 1684. – His work „De Motu Corporum” about the concept of gravity and its effect on the orbits of the planets, referring to Kepler’s laws, was read to the Royal Society by Edmund Halley.