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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.
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.
Mar 14, 2023 · John Harrison (1693-1776) invented an accurate marine chronometer after several decades of research and development. While the pendulum clock had already been invented in the 17th century, a clock that...
John Harrison (24 March 1693 – 24 March 1776) was a carpenter and watch-maker. He invented the marine Chronometer which enabled a ship to accurately know its longitude at sea (position on east-west access) His invention was critical in the development of long-distance seafaring, which was very important in the eighteenth century.
Who was John Harrison? John Harrison was a carpenter by trade who was self-taught in clock making. During the mid-1720s he designed a series of remarkable precision longcase clocks. These clocks achieved an accuracy of one second in a month, far better than any clocks of the time.
Aug 1, 2018 · John Harrison, a carpenter and self-taught clockmaker, spent six decades of his life problem solving as he progressed towards his ultimate triumph—the first accurate marine chronometer.
Sep 2, 2019 · One can understand the opacity of the first published analysis of John Harrison’s first sea watch, colloquially known as H4 and the forerunner of the marine chronometer, in The Principles of Mr Harrison’s Time-keeper.
Apr 3, 2018 · E nglish clockmaker John Harrison revolutionized long distance seafaring in the 18th century, solving the problem of calculating longitude at sea and devising tools that helped sailors navigate...
Apr 3, 2018 · In his quest to win the prize, Harrison made some fascinating creations along the way. Here are five of Harrison’s best-known inventions, including the one for which he’s now famous.
A stunning technical breakthrough came when English carpenter and clockmaker John Harrison built five experimental sea clocks between 1735 and 1772. With them, he demonstrated the feasibility of accurate timekeeping at sea.
