
A major stimulus to improving the accuracy and reliability of clocks was the importance of precise time-keeping for navigation. The position of a ship at sea could be determined with reasonable accuracy if a navigator could refer to a clock that lost or gained less than about 10 seconds per day. This clock could not contain a pendulum, which would be virtually useless on a rocking ship. Many European governments offered a large prize for anyone that could determine longitude accurately. The reward was eventually claimed in 1761 by John Harrison, who dedicated his life to improving the accuracy of his clocks.His first clock (1713) is at the Worshipful Company of Clockmakers Collection in Guildhall (London).
By: K & S Associates (:













_01.jpg)


















