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John Harrison (3 April [O.S. 24 March] 1693 – 24 March 1776) was an English carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the problem of calculating longitude while at sea.
Mar 14, 2023 · Learn how John Harrison invented an accurate marine chronometer after decades of research and development. Find out how his device revolutionized navigation and timekeeping at sea and earned him a prestigious prize.
- Mark Cartwright
John Harrison (born March 1693, Foulby, Yorkshire, Eng.—died March 24, 1776, London) was an English horologist who invented the first practical marine chronometer, which enabled navigators to compute accurately their longitude at sea.
- The Editors of Encyclopaedia Britannica
Learn how John Harrison, a self-taught carpenter and clock maker, created four remarkable timepieces that helped find the ship's longitude at sea. Discover his challenges, trials, rewards and legacy at Royal Museums Greenwich.
John Harrison (1693-1776) was a carpenter and watch-maker who invented the marine chronometer, a device that enabled ships to measure longitude at sea. Learn about his life, his challenges, his achievements and his legacy in this biography.
Sep 2, 2019 · Learn about the history and design of H4, the first marine chronometer that solved the longitude problem. Discover the microscopic magic of its escapement, the diamond pallets, the remontoire and the maintaining power system.
Apr 3, 2018 · Learn about the British horologist who created a device to measure longitude at sea, and the breakthroughs he made along the way. Discover his inventions of marine chronometer, gridiron pendulum, spring remontoire, grasshopper escapement and Jeffreys watch.
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