Accurate clock pendulums / Robert James Matthys.

By: Material type: TextTextPublisher: Oxford ; New York : Oxford University Press, 2004Description: vi, 260 pages : illustrations ; 26 cmContent type:
  • text
  • still image
Media type:
  • unmediated
Carrier type:
  • volume
ISBN:
  • 0198529716
  • 9780198529712
Subject(s): Summary: The Shortt pendulum clock, made in the 1920s, was accurate to within one second per year. To achieve that level of accuracy, a pendulum's length must be constant to one part in 15 million for a whole year. Matthys, who was a senior research engineer for about 35 years, gives us the courage to attempt our own amazing feats in accuracy. He describes simple pendulums, the effects of shape, materials and temperature, the complexities of the suspension spring and pendulum rod, the effects of air and the clock case, and special considerations of electronically-driven pendulums. He includes helpful illustrations and references in each chapter. Annotation : 2004 Book News, Incorporated, Portland, OR (booknews.com).
Holdings
Item type Current library Call number Status Date due Barcode
Books Books Jost Bürgi Library Reading Room TS548 .M38 2004 (Browse shelf(Opens below)) Available 31560000026092

Includes bibliographical references and index.

The Shortt pendulum clock, made in the 1920s, was accurate to within one second per year. To achieve that level of accuracy, a pendulum's length must be constant to one part in 15 million for a whole year. Matthys, who was a senior research engineer for about 35 years, gives us the courage to attempt our own amazing feats in accuracy. He describes simple pendulums, the effects of shape, materials and temperature, the complexities of the suspension spring and pendulum rod, the effects of air and the clock case, and special considerations of electronically-driven pendulums. He includes helpful illustrations and references in each chapter. Annotation : 2004 Book News, Incorporated, Portland, OR (booknews.com).

31560000026092 5561

Rather technical (but little mathematics) observations of a experimental horologist on many issues around designing and building better (more accurate) clock pendulums

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