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Full Description
Brings together the output of a forty-year collaborative research project that unpicked and put into practice the fine details of John Harrison's extraordinary pendulum clock system. Harrison predicted that his unique method of making pendulum clocks could provide as much as one-hundred-times the stability of those made by his contemporaries. However, his final publication, which promised to describe the system, was a chaotic jumble of information, much of which had nothing to do with clockwork. One contemporary reviewer of Harrison's book could only suggest that the end result was a product of Harrison's 'superannuated dotage.'
The focus of this book centres on the making, adjusting, and testing of Clock B which was the subject of various trials at the Royal Observatory, Greenwich. The modern history of Clock B is accompanied by scientific analysis of the clock system, Clock B's performance, the methods of data-gathering alongside historical perspectives on Harrison's clockmaking, that of his contemporaries, and some evaluation of the possible influence of early 18th century scientific thought.
Contents
1: Rory McEvoy: Introducing the precision pendulum clock
2: Andrew King: The origins of John Harrison's 'Pendulum-Clock' technology
3: William Andrewes: Introducing Martin Burgess, clockmaker
4: Donald Saff: Rescuing Martin Burgess's Clock B
5: Martin Burgess: Reflections on making clocks Harrison's way
6: Charles Frodsham et al: Completing Clock B
7: Jonathan Betts: Adjusting and testing Clock B at the Royal Observatory, Greenwich
8: Tom van Baak: Crunching the numbers: analysis of Clock B's performance at Greenwich
9: Mervyn Hobden: Decoding the Physical Theory of Harrison's Timekeepers
10: David Harrison: Analysis of the mechanisms for compensation in Clock B
11: Rory McEvoy: Update on Clock B
