How old is Sir Isaac Newton?

Sir Isaac Newton was a British scientist, physician, theologian, and writer, widely regarded as one of the most influential figures in the history of science. He was born in 1643 in Lincolnshire, England, and experienced a difficult childhood, being raised primarily by his grandmother after his mother remarried. As a schoolboy, Newton showed little interest in mathematics or physics, preferring literature and poetry instead.

During his late teenage years, however, his ambitions and intellectual discipline began to emerge. He developed a strong interest in the natural sciences and enrolled at the University of Cambridge, where he soon distinguished himself as one of the institution’s most brilliant students, despite his reserved nature and poor social skills. Driven by a desire to understand how the world works, Newton famously compiled a list of unresolved problems facing humanity and devoted his life to solving them.

Newton made groundbreaking contributions to mathematics, including work on calculus, the binomial theorem, and analytical methods that later sparked the Newton–Leibniz controversy. In physics, he formulated the laws of motion and the law of universal gravitation, laying the foundations of classical mechanics. He also conducted pioneering research in optics and invented the reflecting telescope. His major works, including Philosophia Naturalis Principia Mathematica and Opticks, remain cornerstones of modern science. Sir Isaac Newton died in 1727 at the age of 84.

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