Isaac Newton
Also called: Newton, Sir Isaac Newton
English physicist and mathematician whose Principia set out the laws of motion and universal gravitation, completing the Scientific Revolution
He was born on a Lincolnshire farm after his father’s death. When plague closed Cambridge University, he returned home in 1665–1666 and there conceived calculus, his theory of light and the germ of universal gravitation — his “miraculous years”. Using prisms he showed that sunlight is made of light of many colours, and he built a reflecting telescope. Later, as Master of the Mint, he pursued counterfeiters, and in 1705 he was knighted. He also devoted many years to alchemy and the study of the Bible.