'To find the hourly variation of the inclination of the lunar orbit...', 1687.
© Science Museum / Science & Society Picture Library
Proposition 34, Problem 15, (shown here in the first edition as Problem 14), from Newton's 'Principia Mathematica' (1687): 'To find the hourly variation of the inclination of the lunar orbit to the plane of the ecliptic.' The discoveries of English physicist and mathematician Isaac Newton (1642-1727) were prolific and hugely influential on science and thought. His work included the three laws of motion, the theory of gravitation, the law of cooling, the binomial theorem and the calculus.