n of d and highlighted the operator aspect which proved important in later developments. By 1675 Leibniz had settled on the notation y dy = y/2 written exactly as it would be today. His results on the integral calculus were published in 1684 and 1686 under the name 'calculus summitries'; Jacob Bernoulli suggested the name integral calculus in 1690. After Newton and Leibniz the development of the calculus was continued by Jacob Bernoulli and Johann Bernoulli. However when Berkeley published his Analyst in 1734 attacking the lack of rigor in the calculus and disputing the logic on which it was based much effort was made to tighten the reasoning. Maclaurin attempted to put the calculus on a rigorous geometrical basis. Newton explained a wide range of previously unrelated phenomena, the eccentric orbits of comets; the tides and their variations; the precession of the Earth's axis; and motion of the Moon as perturbed by the gravity of the Sun. After suffering a nervous breakdown in 1693, Newton retired from research to take up a government position in London becoming Warden of the Royal Mint (1696) and Master (1699). In 1703 he was elected president of the Royal Society and was re-elected each year until his death. He was knighted in 1708 by Queen Anne, the first scientist to be so honored for his work. ReferencesAndrade,E.N. da C. Sir Isaac Newton. Greewood Pub., 1979.Gjertsen, D. The Newton Handbook London: Routledge, 1986.Hall, A.R. Issac Newton Adventurer In Thought. New York: Free Press, 1984.Issac Newton, [online] http://www.reformation.org/newton.htmSir Isaac Newton (1642 - 1727)...
