Isaac Newton

Isaac Newton
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Name	Isaac Newton
Caption	Portrait by Godfrey Kneller, 1689
Birth date	4 January 1643, 25 December 1642
Birth place	Woolsthorpe-by-Colsterworth, Kingdom of England
Death date	31 March 1727, 20 March 1727 (aged 84)
Death place	Kensington, Middlesex, Kingdom of Great Britain
Fields	Physics, astronomy, mathematics, natural philosophy, alchemy, theology
Education	Trinity College, Cambridge (MA, 1668)
Known for	Newtonian mechanics, universal gravitation, calculus, optics
Influences	Galileo Galilei, Johannes Kepler, René Descartes
Influenced	Nicolas Fatio de Duillier, John Locke, Edmond Halley
Awards	Knight Bachelor (1705)

Isaac Newton was an English mathematician, physicist, astronomer, alchemist, theologian, and author, widely recognized as one of the most influential scientists of all time. His seminal work, Philosophiæ Naturalis Principia Mathematica (1687), laid the foundations for classical mechanics, formulating the laws of motion and universal gravitation. He also made pioneering contributions to optics, sharing the invention of calculus with Gottfried Wilhelm Leibniz, and served as President of the Royal Society and Master of the Mint.

Early life and education

He was born prematurely in the hamlet of Woolsthorpe-by-Colsterworth in Lincolnshire. His father, also named Isaac Newton, died three months before his birth, and his mother, Hannah Ayscough, remarried when he was three, leaving him in the care of his maternal grandmother. His early education was at The King's School, Grantham, where he lodged with the local apothecary, William Clarke, and was introduced to chemistry. In 1661, he entered Trinity College, Cambridge, as a sizar, where his studies initially focused on the Aristotelian curriculum but soon turned to the works of modern philosophers like René Descartes and astronomers such as Galileo Galilei and Johannes Kepler. The closure of Cambridge due to the Great Plague of London in 1665 forced him to return to Woolsthorpe for nearly two years, a period of intense intellectual creativity often called his *annus mirabilis*.

Scientific contributions

During his time at Woolsthorpe, he began developing his theories on calculus, optics, and gravity. In optics, his experiments with prisms demonstrated that white light is composed of the colors of the spectrum, a finding he presented to the Royal Society in 1672, leading to his election as a Fellow of the Royal Society. This work culminated in his 1704 book Opticks. His mathematical work on what he called "the method of fluxions" (calculus) was developed in parallel with Gottfried Wilhelm Leibniz, leading to a protracted priority dispute. His crowning achievement was the 1687 publication of Philosophiæ Naturalis Principia Mathematica, often shortened to the Principia, which was encouraged and funded by his friend Edmond Halley. In it, he stated his three laws of motion and the law of universal gravitation, mathematically explaining the motions of celestial bodies, including Kepler's laws of planetary motion, and the phenomena of tides. He also built the first practical reflecting telescope.

Later life and legacy

In 1696, he moved to London to assume the position of Warden of the Mint, later becoming Master of the Mint, where he oversaw the Great Recoinage of 1696 and pursued counterfeiters. He was elected President of the Royal Society in 1703, an office he held until his death, and was knighted by Queen Anne in 1705. His later years involved considerable theological study and writing on Biblical chronology and alchemy, much of which remained unpublished during his lifetime. He never married and died in his sleep at his home in Kensington in 1727. He was given a state funeral and buried in Westminster Abbey. His legacy is monumental; his system of Newtonian mechanics dominated the scientific view of the physical universe for the next three centuries until it was refined by the theory of relativity developed by Albert Einstein. Institutions like NASA rely on his principles for celestial mechanics. His influence extended to the Enlightenment through figures like Voltaire and his standing is commemorated by numerous monuments, including a statue in Trinity College, Cambridge, and the naming of the SI unit of force in his honor.

Category:English physicists Category:Fellows of the Royal Society Category:Alumni of Trinity College, Cambridge