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John Harrison
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Person
John Harrison
2 articles
9 relations
Articles about John Harrison
Marine Chronometer
A marine chronometer is a precision timekeeper accurate enough to be used as a portable reference for finding longitude at sea. The problem was urgent by the early eighteenth century, and in 1714 the British Parliament offered a £ 20,000 reward for a practical…
Clock
A clock is a device that links a regular movement in equal intervals of time to a counting mechanism that reco…
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Longitude Board
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Christiaan Huygens
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Marine ChronometerA marine chronometer is a precision timekeeper accurate enough to be used as a portable reference for finding longitude at sea. The problem was urgent by the early eighteenth century, and in 1714 the British Parliament offered a £ 20,000 reward for a practical…
ClockA clock is a device that links a regular movement in equal intervals of time to a counting mechanism that reco…