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Indigo

Accurate Clock Pendulums by Robert J. Matthys, Hardcover | Indigo Chapters

From Robert J. Matthys

Current price: $382.50
Accurate Clock Pendulums by Robert J. Matthys, Hardcover | Indigo Chapters
Accurate Clock Pendulums by Robert J. Matthys, Hardcover | Indigo Chapters

Indigo

Accurate Clock Pendulums by Robert J. Matthys, Hardcover | Indigo Chapters

From Robert J. Matthys

Current price: $382.50
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Size: 1.99 x 24.6 x 800

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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 beaccurate. 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, reflectingthe 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. | Accurate Clock Pendulums by Robert J. Matthys, Hardcover | Indigo Chapters

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