Accurate Clock Pendulums PDF Download
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Author: Robert J. Matthys
Publisher: OUP Oxford
ISBN: 9780191513688
Category : Technology & Engineering
Languages : en
Pages : 276
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Book Description
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.
Author: Robert J. Matthys
Publisher: OUP Oxford
ISBN: 9780191513688
Category : Technology & Engineering
Languages : en
Pages : 276
Get Book Here
Book Description
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.
Author: Tom Waldman
Publisher: Univ of California Press
ISBN: 0520247701
Category : History
Languages : en
Pages : 285
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Book Description
"Tom Waldman's book is extremely interesting and gives us a lot to think about, particularly at this moment in our nation's history."—Congressman Henry A. Waxman “Tom Waldman's Not Much Left is a sweeping analysis of the demise of American liberalism over the past 40 years, written with clarity, great insight, and admirable research.”—Joe Domanick, author of Cruel Justice: Three Strikes and the Politics of Crime in America's Golden State
Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 588
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Author: John Kerr Tiffany
Publisher:
ISBN:
Category : Postage stamps
Languages : en
Pages : 242
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Book Description
Author: Edward Chace Tolman
Publisher: Univ of California Press
ISBN: 0520344820
Category : Psychology
Languages : en
Pages : 286
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Book Description
This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1951.
Author:
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Category :
Languages : en
Pages : 1380
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Author:
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ISBN:
Category :
Languages : en
Pages : 784
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Author: Eric Hammel
Publisher: Daniel Hammel
ISBN:
Category : History
Languages : en
Pages : 346
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Book Description
ACES AGAINST JAPAN The American Aces Speak Eric Hammel In this superb, originally conceived offering, noted military historian, Eric Hammel brings us first-person accounts from thirty-nine of the American fighter aces who blasted their way across the skies of the Pacific and East Asia from December 7, 1941, until the final air battles over Japan itself in August 1945. Coupled with a clear view of America's far-flung air war against Japan, Hammel's detailed interviews bring out the most thrilling in-the-cockpit experiences of the air combat that the Pacific War’s best Army, Navy, and Marine pilots have chosen to tell. Meet Frank Holmes, who defied death in an outmoded P-36 while still clad in a seersucker suit he had worn to mass earlier that morning. Fly with Scott McCuskey as, single-handed at Midway, he takes out two waves of Japanese dive-bombers that are attacking his precious aircraft carrier. Sweat out the last precious drops of fuel in a defective Marine Wildcat fighter as Medal of Honor recipient Jeff DeBlanc bores ahead to his target to keep the faith with the bomber crews he has been assigned to protect. Experience the ecstasy of total victory as Ralph Hanks becomes the Navy's first Hellcat ace-in-a-day when he destroys five Japanese fighters over the Gilbert Islands in a single mission. A superb interviewer, Hammel has collected some of the very best air-combat tales from America's war with Japan. Combined with the four other volumes in The American Aces Speak series, this work will stand as an enduring testament to the brave men who fought the first and last air war in which high-performance, piston-engine fighters held sway. These are stories of bravery and survival, of men and machines pitted against one another in heart-stopping, unforgiving high-speed aerial combat. The American Aces Speak is a highly-charged emotional rendering of what men felt in the now-dim days of personal combat at the very edge of our living national history. There was never a war like it, and there never will be again. These are America's eagles, and the stories are their own, in their very own words. Eric Hammel is the author of nearly thirty other books, including Pacifica Press’s Carrier Clash, Carrier Strike, Aces Against Germany, Aces Against Japan II, Aces at War, and Aces in Combat. He lives with his family near San Francisco. Critical Acclaim for The American Aces Speak Series The Marine Corps Aviation Association Yellow Sheet says: “The recounting of each story is done in the pilot’s own words. This is a powerful technique that draws readers into the action and introduces them to the world of the fighter pilot” The American Fighter Aces Bulletin says: “Some of [the] episodes are well-known; others have never been written before. But each account delivers something intensely personal about the Pacific Air War.” The Library Journal says: “No PR hype or dry-as-dust prose here. Hammel allows his flyers to tell their stories in their own way . . . Exciting stuff aviation and World War II buffs will love.” Book Page says: “For those who have an interest in World War II, or those who simply like to read of drama in the skies, Eric Hammel’s [Aces Against Japan] is recommended reading. It is a must for any historian’s bookshelf.” WWII Aviation Booklist says: “Hammel provides a veritable feast of aviation combat narrative. As always in this series, the entries [in Aces at War] have been carefully selected to provide the most entertaining ride possible for his readers. Easily the best series available on air combat! Get them all!”
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Author: Paulin Huggett PEARCE
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Book Description
Author: George Viner Ellis
Publisher: BoD – Books on Demand
ISBN: 3368739069
Category : Fiction
Languages : en
Pages : 778
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Book Description
Reprint of the original, first published in 1840.
