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Harrison decoded : towards a perfect pendulum clock / [electronic resource]
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| 자료유형 | E-Book |
|---|---|
| 개인저자 | McEvoy, Rory, editor. Betts, Jonathan, editor. |
| 서명/저자사항 | Harrison decoded :towards a perfect pendulum clock /edited by Rory McEvoy and Jonathan Betts.[electronic resource] |
| 판사항 | First edition. |
| 발행사항 | Oxford ; New York, NY : Oxford University Press, 2020. |
| 형태사항 | 1 online resource |
| 소장본 주기 | OCLC control number change |
| ISBN | 9780192548801 0192548808 9780191858574 0191858579 |
| 일반주기 |
Modification of the escapement force by the spring and circular cheeks
|
| 내용주기 | Cover -- Harrison Decoded: Towards A Perfect Pendulum Clock -- Copyright -- Director's Introduction -- Foreword -- Contents -- List of Contributors -- Plates -- Chapter 1: Introducing the Precision Pendulum Clock -- The pendulum as a time-measuring device -- Circular deviation -- Towards a perfect oscillator -- The deadbeat escapement -- Escapement error -- Weather and the pendulum -- To improve or not to improve -- References -- Chapter 2: The Origins of John Harrison's 'Pendulum-Clock' Technology -- References -- Chapter 3: Introducing Martin Burgess, Clockmaker -- References Chapter 4: Rescuing Martin Burgess's Clock B -- References -- Chapter 5: Reflections on Making Clocks Harrison's Way -- Prerequisites for a Harrisonian precision pendulum clock -- The remontoire design -- The Harrison Pendulum -- The hill tests -- The design of the pendulums for Clocks A and B -- Air density compensation -- Temperature compensation -- Summary -- Reference -- Chapter 6: Completing Clock B -- Delivery and initial plans -- What could be expected from Clock B? -- Clock A -- Starting the work -- Construction of the electric rewind and work towards the finishing of Clock B Test period -- Clock B at Greenwich -- Reference -- Chapter 7: Adjusting and Testing Clock B at the Royal Observatory, Greenwich -- Introduction -- Background -- Installation and the location of the clock -- The trials -- The first trial, 2012-2013 -- Harrison's 'barometric' (air density) compensation -- A simple explanation -- The practice of the hill test -- The second trial, 2014-2015 -- Guinness World Record -- Shorter when warm -- Air viscosity -- The end of the trial -- Appendix: Critical comments -- Clock B -- Mathematical analysis -- Clock B: what can be claimed? -- Was it needed? Impossibly complex and expensive? -- References -- Chapter 8: Crunching the Numbers: Analysis of Clock B's Performance at Greenwich -- Introduction -- Results for 2012-2013 (110 days) -- Results for 2014-2015 (130 days) -- Measurement system -- 2012-2013 data (110 days) -- 2014-2015 data (130 days) -- Correlation and compensation -- High-resolution measurements -- Results, long term (476 days) -- Leap second -- Clock B suggestions -- Measurement suggestions -- Conclusion -- References -- Chapter 9: Decoding the Physical Theory of Harrison's Timekeepers -- Newtonian physics Popularising/commercialising Newtonian physics -- Dominion -- Dynamic stability -- Acknowledgements -- References -- Chapter 10: Analysis of the Mechanisms for Compensation in Clock B -- Introduction -- Changes in air density and viscosity on the pendulum rate -- The indirect effect of the grasshopper escapement on the pendulum rate with changes in running arc -- The indirect effect of the suspension spring and circular cheeks on the pendulum rate with changes in running arc -- Modification of the pendulum circular error by the spring and circular cheeks |
| 요약 | This book is an exposition of the lesser-known work of one of the giants of the 18th century longitude story, the maverick clockmaker John Harrison (1693-1776). Harrison's background, methodology, and thinking. For those with a practical interest, the book is an excellent starting point for anyone wishing to make a clock of this type. |
| 주제명(개인명) | Harrison, John,1693-1776. -- fast -- |
| 일반주제명 | Chronometers -- England -- History. Clock and watch making. Pendulum. |
| 언어 | 영어 |
| 기타형태 저록 | Print version:McEvoy, RoryHarrison Decoded : Towards a Perfect Pendulum ClockOxford : Oxford University Press USA - OSO,c20209780198816812 |
| 대출바로가기 | https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=2462568 |
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| No. | 등록번호 | 청구기호 | 소장처 | 도서상태 | 반납예정일 | 예약 | 서비스 | 매체정보 |
|---|---|---|---|---|---|---|---|---|
| 1 | WE00020256 | 522/.5 | 가야대학교/전자책서버(컴퓨터서버)/ | 대출가능 |
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