Accurate Clock Pendulums Robert James Matthys

ISBN: 9780198529712

Published: August 5th 2004

Hardcover

280 pages


Description

Accurate Clock Pendulums  by  Robert James Matthys

Accurate Clock Pendulums by Robert James Matthys
August 5th 2004 | Hardcover | PDF, EPUB, FB2, DjVu, talking book, mp3, ZIP | 280 pages | ISBN: 9780198529712 | 10.17 Mb

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 clocks accuracy resides in its pendulum. If theMoreThe 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 clocks 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.

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