Author Archives: Rory McEvoy

A new addition to the galleries at the Royal Observatory, Greenwich

The extraordinarily accurate ‘Burgess Clock B’ was recently installed in the Royal Observatory’s Time and Longitude Gallery where it will be on display for the next three years. The following filmed interview introduces the work of Martin Burgess and the … Continue reading

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The Wittnauer ‘2000’ Time Machine: perpetual calendar or not?

I am fascinated by gimmicks used by past watch manufacturers to make their products stand out in a crowded marketplace and this post is the first in a short series on some attention seeking watches that have piqued my interest. … Continue reading

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Commemorating an invasion that never happened

Last month saw the bicentenary of the Battle of Waterloo and the end of the Napoleonic era. To mark the anniversary, this week’s blog posting looks at two curious watch dials. The unusual point being that they both appear to … Continue reading

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Harrison decoded: towards a perfect pendulum clock

In July 2014 the NMM hosted on one-day conference, entitled Decoding Harrison, which presented the story of around forty years of collaborative research into John Harrison’s complex and surprising pendulum clock theory. During the conference the exciting result of a … Continue reading

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A second in one-hundred days: insanity or genius?

In 1775 John Harrison made a critical remark about Graham’s dead beat escapement, saying, of George Graham, that “…either he must be out of his Senses, or I must be so!”  Later in the same publication he stated of his … Continue reading

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An experiment in ‘florology’

  Recently, I have been looking at the role of timekeepers in the history of science and whilst reading around the pre-pendulum era, happened upon a blog-worthy experiment conducted by Athanasius Kircher (1601/2-80). Kircher, a German Jesuit polymath, applied the … Continue reading

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300 years

  This year saw the tercentenary of the death Thomas Tompion (b.1639), the ‘Father of English Clockmaking’ and his life is celebrated in two special exhibitions: the first at the British Museum, entitled ‘Perfect Timing’, which focuses on the magnificent … Continue reading

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Falling back

  It’s that time of year again when our faithful timekeepers quiver, for fear that we will ignore the advice of the clockmaker and attempt to turn the hands backwards, as we return to daily life punctuated by GMT (or … Continue reading

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Home time

  As next year’s AHS conference will be shaped by the theme ‘Military Time’, it seems appropriate that this post should follow the military theme and by chance, as with David Read’s recent post, it includes a radio.   There … Continue reading

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