One of the most famous clocks ever built is running again this week - the first time it has done so in over a decade. H4, the marine chronometer that the 18th Century engineer John Harrison ...

Harrison, born in 1693 in Lincolnshire, proposed a clock design that would solve the problem of determining longitude at sea. His proposal was vindicated last Thursday, 300 years after he first ...

The world famous H1 Longitude Sea Clock is possibly the most important timepiece ever created. Nearly 300 years ago it was the beginning of John Harrison's quest to create a timekeeper accurate enough ...

Developed over decades in the 1700s, Harrison’s clocks were major steps toward a reliable way of calculating longitude at sea Developed over decades in the 1700s, Harrison’s clocks were major steps ...

A £10m prize has been launched to solve one of the greatest scientific problems facing the world today. The competition idea is based on the 1714 Longitude Prize, which was won by John Harrison. His ...

British clockmaker John Harrison (1693-1776), the man who built the first marine chronometer to measure longitude, was born 325 years ago today and is celebrated in the latest Google Doodle. Harrison ...

Historic documents giving an insight into an 18th Century clockmaker's struggle to be awarded the prize for measuring longitude have been bought by the National Maritime Museum. Working class joiner ...

Briefly prior to his demise around 1776, eccentric clock-maker John Harrison declared to have blueprinted the perfect clock, a device that would manage time accurately. His competitors and associates ...