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English carpenter and clockmaker
- 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. Harrison's solution revolutionized navigation and greatly increased the safety of long-distance sea travel.
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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 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
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.
John Harrison Biography. 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 ...
Even as Anson sought his prize in the distant Pacific, John Harrison, the son of an English carpenter, labored at his workbench on a solution to the longitude problem that would free ships to travel wherever the wind would serve. Time was at the root of his solution, because the earth takes exactly 24 hours to rotate.
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...
Oct 19, 1995 · Longitude from Dava Sobel is a fascinating account of how a virtually unknown watchmaker named John Harrison conquered one of the oldest and thorniest problems surrounding the ocean voyages - the problem of accurately measuring longitude-, which stumped even the best of scientific minds for centuries.
