A look at man's attempts to accurately measure time shows how the concept of time has steadily evolved and broadened our perception of the world.

Bored during Mass at the cathedral in Pisa, the seventeen-year-old Galileo regarded the chandelier swinging overhead--and remarked, to his great surprise, that the lamp took as many beats to complete an arc when hardly moving as when it was swinging widely. Galileo's Pendulum tells the story of what this observation meant, and of its profound consequences for science and technology. The principle of the pendulum's swing--a property called isochronism--marks a simple yet fundamental system in nature, one that ties the rhythm of time to the very existence of matter in the universe. Roger Newton sets the stage for Galileo's discovery with a look at biorhythms in living organisms and at early calendars and clocks--contrivances of nature and culture that, however adequate in their time, did not meet the precise requirements of seventeenth-century science and navigation. Galileo's Pendulum recounts the history of the newly evolving time pieces--from marine chronometers to atomic clocks--based on the pendulum as well as other mechanisms employing the same physical principles, and explains the Newtonian science underlying their function. The book ranges nimbly from the sciences of sound and light to the astonishing intersection of the pendulum's oscillations and quantum theory, resulting in new insight into the make-up of the material universe. Covering topics from the invention of time zones to Isaac Newton's equations of motion, from Pythagoras' theory of musical harmony to Michael Faraday's field theory and the development of quantum electrodynamics, Galileo's Pendulum is an authoritative and engaging tour through time of the most basic all-pervading system in the world. Table of Contents: Preface Introduction 1. Biological Timekeeping: The Body's Rhythms 2. The Calendar: Different Drummers 3. Early Clocks: Home-Made Beats 4. The Pendulum Clock: The Beat of Nature 5. Successors: Ubiquitous Timekeeping 6. Isaac Newton: The Physics of the Pendulum 7. Sound and Light: Oscillations Everywhere 8. The Quantum: Oscillators Make Particles Notes References Index Reviews of this book: The range of things that measure time, from living creatures to atomic clocks, brackets Newton's intriguing narrative of time's connections, in the middle of which stands Galileo's famous discovery about pendulums...Science buffs will delight in the links Newton makes in this readable tour of how humanity marks time. --Gilbert Taylor, Booklist

Politics, manners, humor, sexuality, wealth, even our definitions of success are periodically renegotiated based on the new values society chooses to use as a lens to judge what is acceptable. Are these new values randomly chosen or is there a pattern? Pendulum chronicles the stuttering history of western society; that endless back-and-forth swing between one excess and another, always reminded of what we left behind. There is a pattern and it is 40 years: 2003 was a fulcrum year, as was 1963, its opposite. Pendulum explains where we have been as a society, how we got here, and where we are headed. If you would benefit from a peek into the future, you would do well to read this book.

You Haven’t Missed It; You’re Right on Time! Many of God’s people feel guilty for going through difficult seasons. We think depression is spiritual weakness. In challenging circumstances, we ask: “God, where are You?” We consider the state of our lives and become discouraged, assuming we are not where God wants us to be. But what if we are? What if the very circumstances that threaten to destroy us are the very things that launch us into our God-ordained moments of destiny? In The Pendulum, Pastor Rickie Rush shows you that there is a time for everything under heaven. Learn how: Your seasons of difficulty can push you closer towards fulfilling your purpose God never wastes the struggles that you go through To embrace and flow with the natural seasons of life God’s supernatural ability causes you to come out victorious on the other side God wants to use your story and transform you into someone who can help others flourish in every season of life!

A clear and easy to follow textbook including material on forces, machines, motion, properties of matter, electronics and energy, problem-solving investigations and practice in experimental design.

Three book editors, jaded by reading far too many crackpot manuscripts on the mystic and the occult, are inspired by an extraordinary conspiracy story told to them by a strange colonel to have some fun. They start feeding random bits of information into a powerful computer capable of inventing connections between the entries, thinking they are creating nothing more than an amusing game, but then their game starts to take over, the deaths start mounting, and they are forced into a frantic search for the truth

The book's argument depends, as do most proposals in education, upon cer tain positions in the philosophy of education. I believe that education should be primarily concerned with developing understanding, with initiation into worth while traditions of intellectual achievement, and with developing capacities for clear, analytic and critical thought. These have been the long-accepted goals of liberal education. In a liberal education, students should come to know and appre ciate a variety of disciplines, know them at an appropriate depth, see the interconnectedness of the disciplines, or the modes of thought, and finally have some critical disposition toward what is being learned, to be genuinely open minded about intellectual things. These liberal goals are contrasted with goals such as professional training, job preparation, promotion of self-esteem, social engineering, entertainment, or countless other putative purposes of schooling that are enunciated by politicians, administrators, and educators. The book's argument might be consistent with other views of education especially ones about the training of specialists (sometimes called a professional view of education)-but the argument fits best with a liberal view of education. The liberal hope has always been that if education is done well, then other per sonal and social goods will follow. The development of informed, critical, and moral capacities is the cornerstone for personal and social achievements.

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.