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1985
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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 was an English horologist who invented the first practical marine chronometer, which enabled navigators to compute accurately their longitude at sea. Harrison, the son of a carpenter and a mechanic himself, became interested in constructing an accurate chronometer in 1728.
- The Editors of Encyclopaedia Britannica
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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.
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 clockmaker who solved the problem of determining longitude at sea. He designed and built four clocks, including a tiny watch, that won him partial recognition and a special payment from the British government.
John Harrison's Horological Legacy. A look at how his inventions changed timekeeping. British Museum. Portrait of John Harrison (1768) by Print made by Philippe Joseph Tassaert.
