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Synopsis
The Shortt clock, made in the 1920s, is the most famous accurate clock pendulum ever known, having an accuracy of one second per year when kept at nearly constant temperature. Almost all of a pendulum clock's accuracy resides in its pendulum. If the pendulum is accurate, the clock will be accurate. In this book, the author describes many scientific aspects of pendulum design and operation in simple terms with experimental data, and little mathematics. It has been written, looking at all the different parts and aspects of the pendulum in great detail, chapter by chapter, reflecting the degree of attention necessary for making a pendulum run accurately. The topics covered include the dimensional stability of different pendulum materials, good and poor suspension spring designs, the design of mechanical joints and clamps, effect of quartz on accuracy, temperature compensation, air drag of different bob shapes and making a sinusoidal electromagnetic drive. One whole chapter is devoted to simple ways of improving the accuracy of ordinary low-cost pendulum clocks, which have a different construction compared to the more expensive designs of substantially well-made ones. This book will prove invaluable to anyone who wants to know how to make a more accurate pendulum or pendulum clock.
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About the Author
Robert J. Matthys was a Senior Research Engineer at Honeywell, Inc., from 1952 to 1987. He has spent thirty-seven years designing a wide variety of hardware and instrumentation in the fields of electronics, optics, acoustics, mechanics, and photography. In addition, he has spent nine years designing and testing pendulums of various kinds, along with their electronic drive systems and servos, both pulsed and continuous sine wave. He lives in Minneapolis, Minnesota.
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Accurate Clock Pendulums (eng)
Print on DemandSeller: Brook Bookstore On Demand, Napoli, NA, Italy
Seller rating 4 out of 5 stars
Condition: new. Questo è un articolo print on demand. Seller Inventory # 3fbb933c24bbdec6b45448b79c97ae55
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Accurate Clock Pendulums
Published by
Oxford University Press, 2004
ISBN 10: 0198529716
ISBN 13: 9780198529712
Used
Hardcover
Signed
Seller: Salish Sea Books, Bellingham, WA, U.S.A.
Seller rating 5 out of 5 stars
Condition: Very Good. ** Signed gift inscription by Robert Matthys on the first endpaper: "To Jim Phillips, May all his clocks run & never stop! Robert Matthys" **; Very Good in a Very Good dust jacket; Hardcover; First Printing; Number line: 10 9 8 7 6 5 4 3 2 1; Dust jacket is clean and intact with just minor edgewear, and has not been price-clipped (Now fitted with a new, Brodart jacket protector); Light wear to the boards; The textblock edges are unblemished; The endpapers and all text pages are clean and unmarked; The binding is excellent with a straight spine; This book will be shipped in a sturdy cardboard box with foam padding; Medium-Large Format (Quatro, 9.75" - 10.75" tall); 1.7 lbs; Black and dark blue dust jacket with illustration of pendulums, and title in white lettering; 2004, Oxford University Press; 280 pages; "Accurate Clock Pendulums," by Robert James Matthys. Seller Inventory # SKU-0497AB07503205
Quantity: 1 available
Stock Image
Accurate Clock Pendulums
Published by
Oxford University Press, 2004
ISBN 10: 0198529716
ISBN 13: 9780198529712
Used
Hardcover
Seller: OM Books, Sevilla, SE, Spain
Seller rating 5 out of 5 stars
Condition: Usado - bueno. Seller Inventory # 9780198529712
Quantity: 1 available