# Isaac Newton

**Sir Isaac Newton was an English mathematician, physicist, astronomer, theologian, and author. His book Philosophiæ Naturalis Principia Mathematica established classical mechanics. Newton also made seminal contributions to optics, and shares credit with Gottfried Wilhelm Leibniz for developing the infinitesimal calculus. He was a devout but unorthodox Christian who privately rejected the doctrine of the Trinity.**

### About Isaac Newton in brief

Sir Isaac Newton was an English mathematician, physicist, astronomer, theologian, and author. His book Philosophiæ Naturalis Principia Mathematica established classical mechanics. Newton also made seminal contributions to optics, and shares credit with Gottfried Wilhelm Leibniz for developing the infinitesimal calculus. He was a devout but unorthodox Christian who privately rejected the doctrine of the Trinity. He dedicated much of his time to the study of alchemy and biblical chronology, but most of his work in those areas remained unpublished until long after his death. Newton served two brief terms as Member of Parliament for the University of Cambridge, in 1689–90 and 1701–02. He spent the last three decades of his life in London, serving as Warden and Master of the Royal Mint, as well as president of theRoyal Society. He died in 1705, and was buried at St Paul’s Cathedral, London, with his wife, Mary, and their three children. He is buried in Westminster Abbey, next to his wife’s parents, Mary and Mary Ayscough, and his brother, William Ayscoug, who died in 1801. Newton was the first person to discover the existence of the solar system, and the first to calculate the speed of sound. His work on light was collected in his highly influential book Opticks, published in 1704. He also formulated an empirical law of cooling, made the first theoretical calculation of theSpeed of sound, and introduced the notion of a Newtonian fluid.

Newton’s work on the mathematical sciences, including calculus and power series, was published in 1687 and 1688. He was a fellow of Trinity College and the second Lucasian Professor of Mathematics at the University of Cambridge. His father, also named Isaac Newton, had died three months before in 1642. He had three children from her second marriage. Newton disliked his stepfather and maintained some enmity towards his mother for marrying him, as revealed by this entry in a list of sins committed up to the age of 19: \”Threatening my father and mother Smith to burn them and the house over them.\” Newton’s mother reportedly said that he could have fit inside a quart mug. He hated Stokes School, Stokes, by an occupation he hated, and went back to The King’s School, Grantham, as revenge against a schardard, Henry Stokes. In 1664 he was awarded a scholarship to Trinity College, guaranteeing him four more years until he could get his MA. He started as a subsar paying his way by performing valet’s duties by performing sundials. At the time, he started as subsarpaying his way—until he was 18 years old. In June 1661, he was admitted to Cambridge, on the recommendation of his uncle Rev William A skyscough, who had studied there, and studied there for four years. He went on to become one of the most influential scientists of all time.

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