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Accurate Clock Pendulums - Oxford Scholarship Online
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Accurate Clock Pendulums

Robert J. Matthys


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. This book 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 nec ... More

Keywords: pendulum clocks, accuracy, clamps, mechanical joints, quartz, temperature compensation, air drag, sinusoidal electromagnetic drive, pendulum, design

Bibliographic Information

Print publication date: 2004 Print ISBN-13: 9780198529712
Published to Oxford Scholarship Online: January 2010 DOI:10.1093/acprof:oso/9780198529712.001.0001


Affiliations are at time of print publication.

Robert J. Matthys, author
Former Senior Research Engineer, Honeywell Inc, Minneapolis, MN, USA

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Part I General

Part II Suspension spring

Part III Pendulum rod

Part IV Air and clock case effects

Part V Electronics

End Matter