understanding pendulums a brief introduction 12 history of mechanism and machine science

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Understanding Pendulums

Author : L.P. Pook
ISBN : 9400714157
Genre : Technology & Engineering
File Size : 60. 88 MB
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Despite their apparent simplicity, the behaviour of pendulums can be remarkably complicated. Historically, pendulums for specific purposes have been developed using a combination of simplified theory and trial and error. There do not appear to be any introductory books on pendulums, written at an intermediate level, and covering a wide range of topics. This book aims to fill the gap. It is written for readers with some background in elementary geometry, algebra, trigonometry and calculus. Historical information, where available and useful for the understanding of various types of pendulum and their applications, is included. Perhaps the best known use of pendulums is as the basis of clocks in which a pendulum controls the rate at which the clock runs. Interest in theoretical and practical aspects of pendulums, as applied to clocks, goes back more than four centuries. The concept of simple pendulums, which are idealised versions of real pendulums is introduced. The application of pendulums to clocks is described, with detailed discussion of the effect of inevitable differences between real pendulums and simple pendulums. In a clock, the objective is to ensure that the pendulum controls the timekeeping. However, pendulums are sometimes driven, and how this affects their behaviour is described. Pendulums are sometimes used for occult purposes. It is possible to explain some apparently occult results by using modern pendulum theory. For example, why a ring suspended inside a wine glass, by a thread from a finger, eventually strikes the glass. Pendulums have a wide range of uses in scientific instruments, engineering, and entertainment. Some examples are given as case studies. Indexed in the Book Citation Index– Science (BKCI-S)

Reconstruction Designs Of Lost Ancient Chinese Machinery

Author : Hong-Sen Yan
ISBN : 9781402064609
Genre : Technology & Engineering
File Size : 24. 44 MB
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South pointing chariots, walking machines and the astronomical mechanical clock are all used as illustrated examples in this fascinating and unique study of lost machinery in ancient China. This is the first book of its kind, combining creative mechanism design methodology with mechanical evolution and variation theory to set out how some ancient designs can be recreated. Furthermore the book reflects on how age-old wisdoms could stimulate stunning new machinery in the future.

The Mechanics Of Mechanical Watches And Clocks

Author : Ruxu Du
ISBN : 9783642293085
Genre : Technology & Engineering
File Size : 86. 33 MB
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"The Mechanics of Mechanical Watches and Clocks" presents historical views and mathematical models of mechanical watches and clocks. Although now over six hundred years old, mechanical watches and clocks are still popular luxury items that fascinate many people around the world. However few have examined the theory of how they work as presented in this book. The illustrations and computer animations are unique and have never been published before. It will be of significant interest to researchers in mechanical engineering, watchmakers and clockmakers, as well as people who have an engineering background and are interested in mechanical watches and clocks. It will also inspire people in other fields of science and technology, such as mechanical engineering and electronics engineering, to advance their designs. Professor Ruxu Du works at the Chinese University of Hong Kong, China. Assistant Professor Longhan Xie works at the South China University of Technology, China.

A History Of Mechanical Inventions

Author : Abbott Payson Usher
ISBN : 9780486143590
Genre : Technology & Engineering
File Size : 87. 18 MB
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Updated classic explores importance of technological innovation in cultural and economic history of the West. Water wheels, clocks, printing, machine tools, more. "Without peer." — American Scientist.

Mechanics Magazine And Journal Of Science Arts And Manufactures

Author :
ISBN : CORNELL:31924062404672
Genre : Industrial arts
File Size : 83. 19 MB
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Feedback Systems

Author : Karl Johan Aström
ISBN : 1400828732
Genre : Mathematics
File Size : 71. 98 MB
Format : PDF
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This book provides an introduction to the mathematics needed to model, analyze, and design feedback systems. It is an ideal textbook for undergraduate and graduate students, and is indispensable for researchers seeking a self-contained reference on control theory. Unlike most books on the subject, Feedback Systems develops transfer functions through the exponential response of a system, and is accessible across a range of disciplines that utilize feedback in physical, biological, information, and economic systems. Karl Åström and Richard Murray use techniques from physics, computer science, and operations research to introduce control-oriented modeling. They begin with state space tools for analysis and design, including stability of solutions, Lyapunov functions, reachability, state feedback observability, and estimators. The matrix exponential plays a central role in the analysis of linear control systems, allowing a concise development of many of the key concepts for this class of models. Åström and Murray then develop and explain tools in the frequency domain, including transfer functions, Nyquist analysis, PID control, frequency domain design, and robustness. They provide exercises at the end of every chapter, and an accompanying electronic solutions manual is available. Feedback Systems is a complete one-volume resource for students and researchers in mathematics, engineering, and the sciences. Covers the mathematics needed to model, analyze, and design feedback systems Serves as an introductory textbook for students and a self-contained resource for researchers Includes exercises at the end of every chapter Features an electronic solutions manual Offers techniques applicable across a range of disciplines

The Science And Engineering Of Materials Si Edition

Author : Donald R. Askeland
ISBN : 9781133417309
Genre : Technology & Engineering
File Size : 40. 48 MB
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The Science and Engineering of Materials Sixth Edition describes the foundations and applications of materials science as predicated upon the structure-processing-properties paradigm with the goal of providing enough science so that the reader may understand basic materials phenomena, and enough engineering to prepare a wide range of students for competent professional practice. By selecting the appropriate topics from the wealth of material provided in The Science and Engineering of Materials, instructors can emphasize materials, provide a general overview, concentrate on mechanical behavior, or focus on physical properties. Since the book has more material than is needed for a one-semester course, students will also have a useful reference for subsequent courses in manufacturing, materials, design, or materials selection. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.

Scientific American

Author :
ISBN : PSU:000063000153
Genre : Science
File Size : 22. 77 MB
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Monthly magazine devoted to topics of general scientific interest.

Accurate Clock Pendulums

Author : Robert J. Matthys
ISBN : 0191513687
Genre : Technology & Engineering
File Size : 45. 14 MB
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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 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.

The Mechanics Magazine And Journal Of Science Arts And Manufactures

Author :
ISBN : NYPL:33433084021447
Genre : Industrial arts
File Size : 49. 8 MB
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