Jeremy Thacker dating history
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Jeremy Thacker is a member of the following lists: 18th-century British people, 18th-century English writers and 18th-century British writers.
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Jeremy Thacker was a possibly apocryphal 18th-century writer and watchmaker, who for a long time was believed to be the first to have coined the word "chronometer" for precise clocks designed to find longitude at sea, though an earlier reference by William Derham has now been found. Thacker is credited with writing The Longitudes Examin'd, published in London in 1714, in which the term 'chronometer' appears. In the work, the claim is made that Thacker created and extensively tested a marine chronometer positioned on gimbals and within a vacuum, and that sea trials would take place. It has been concluded by others that such tests must have resulted in failure. The idea of a vacuum for a marine clock had already been proposed by the Italian clockmaker Antimo Tempera in 1668. Slightly later, John Harrison would successfully build marine timekeepers from 1730.
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