Time From Earth Rotation To Atomic Physics
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Author | : Dennis D. McCarthy |
Publisher | : Cambridge University Press |
Total Pages | : 403 |
Release | : 2018-10-18 |
Genre | : Science |
ISBN | : 1107197287 |
Download Time: From Earth Rotation to Atomic Physics Book in PDF, Epub and Kindle
This accessible reference presents the evolution of concepts of time and methods of time keeping, for historians, scientists, engineers, and educators. The second edition has been updated throughout to describe twentieth- and twenty-first-century advances, progress in devices, time and cosmology, the redefinition of SI units, and the future of UTC.
Author | : Dennis D. McCarthy |
Publisher | : Cambridge University Press |
Total Pages | : 403 |
Release | : 2018-10-18 |
Genre | : Science |
ISBN | : 1108187072 |
Download Time: From Earth Rotation to Atomic Physics Book in PDF, Epub and Kindle
In the twenty-first century, we take the means to measure time for granted, without contemplating the sophisticated concepts on which our time scales are based. This volume presents the evolution of concepts of time and methods of time keeping up to the present day. It outlines the progression of time based on sundials, water clocks, and the Earth's rotation, to time measurement using pendulum clocks, quartz crystal clocks, and atomic frequency standards. Time scales created as a result of these improvements in technology and the development of general and special relativity are explained. This second edition has been updated throughout to describe twentieth- and twenty-first-century advances and discusses the redefinition of SI units and the future of UTC. A new chapter on time and cosmology has been added. This broad-ranging reference benefits a diverse readership, including historians, scientists, engineers, educators, and it is accessible to general readers.
Author | : Claude Audoin |
Publisher | : Cambridge University Press |
Total Pages | : 356 |
Release | : 2001-09-06 |
Genre | : Reference |
ISBN | : 9780521003971 |
Download The Measurement of Time Book in PDF, Epub and Kindle
A unique insight into the measurement of time and its applications, at an introductory level.
Author | : A Jones |
Publisher | : CRC Press |
Total Pages | : 203 |
Release | : 2000-01-01 |
Genre | : Science |
ISBN | : 1420033492 |
Download Splitting The Second Book in PDF, Epub and Kindle
Until the 1950s timekeeping was based on the apparent motion of the Sun that in turn reflected the rotation of the Earth on its axis. But the Earth does not turn smoothly. By the 1940s it was clear that the length of the day fluctuated unpredictably and with it the length of the second. Astronomers wanted to redefine the second in terms of the moti
Author | : James Jespersen |
Publisher | : Courier Corporation |
Total Pages | : 322 |
Release | : 1999-01-01 |
Genre | : Science |
ISBN | : 0486409139 |
Download From Sundials to Atomic Clocks Book in PDF, Epub and Kindle
Clear and accessible introduction to the concept of time examines measurement, historic timekeeping methods, uses of time information, role of time in science and technology, and much more. Over 300 illustrations.
Author | : Luciano Colombo |
Publisher | : IOP ebooks |
Total Pages | : 0 |
Release | : 2023-10-09 |
Genre | : Science |
ISBN | : 9780750357326 |
Download Atomic and Molecular Physics Book in PDF, Epub and Kindle
This second edition course text introduces the fundamental quantum physics of atoms and molecules. With revised and extended content, this book is the first volume in a series of three aiming to present a broad coverage of atomic, molecular, solid-state and statistical physics. Divided into three parts, the first provides a historical perspective leading to the contemporary view of atomic and molecular physics, outlining the principles of non-relativistic quantum mechanics. The second covers the physical description of atoms and their interaction with radiation, whilst the third deals with molecular physics. The book's pedagogical features include conceptual layout sections that define the goals of each chapter, a simplified but rigorous mathematical apparatus, and a thorough discussion of approximations used to develop the adopted physical models. Key Features Fills a gap for a self-contained undergraduate textbook in atomic and molecular physics Is tailored for a one-semester course Focuses on a selected set of topics, whilst also providing substantial, in-depth coverage of the subject Emphasises phenomenology rather than mathematics/formalism Uses various pedagogical features, including end-of-chapter exercises with solutions
Author | : John A. Eddy |
Publisher | : Government Printing Office |
Total Pages | : 316 |
Release | : 2009 |
Genre | : Business & Economics |
ISBN | : 9780160838088 |
Download The Sun, the Earth, and Near-earth Space Book in PDF, Epub and Kindle
" ... Concise explanations and descriptions - easily read and readily understood - of what we know of the chain of events and processes that connect the Sun to the Earth, with special emphasis on space weather and Sun-Climate."--Dear Reader.
Author | : Masatoshi Kajita |
Publisher | : Programme: Iop Expanding Physi |
Total Pages | : 0 |
Release | : 2018-09-24 |
Genre | : Technology & Engineering |
ISBN | : 9780750321228 |
Download Measuring Time Book in PDF, Epub and Kindle
In this fascinating book Masatoshi Kajita recounts the importance of precise measurements and their inherent uncertainty, before telling the story of humankind's efforts to define and measure time with increasing accuracy, culminating in the development of atomic clocks. These improvements in the accurate measurement of time and frequency have played a pivotal role in the development of modern science; including the confirmation of Einstein's Theory of Relativity, and the recent detection of gravity waves. Furthermore, such measurements afforded by atomic clocks and other mechanisms are being used to examine key questions about the very fundamentals of our universe, the possibility of symmetry violation and even testing the idea that there may be variation of the fundamental constants themselves over time.
Author | : F. Richard Stephenson |
Publisher | : Cambridge University Press |
Total Pages | : 577 |
Release | : 1997-06-05 |
Genre | : Science |
ISBN | : 0521461944 |
Download Historical Eclipses and Earth's Rotation Book in PDF, Epub and Kindle
This book is intended for geophysicists, astronomers (especially those with an interest in history), historians and orientalists. The culmination of many years of research, it discusses, in depth, ancient and medieval eclipse observations and their importance in studying Earth's past rotation. This was the first major book on this subject to appear in the last twenty years. The author has specialised in the interpretation of early astronomical records and their application to problems in modern astronomy for many years. The book contains an in-depth discussion of numerous eclipse records from Babylon, China, Europe and the Arab lands. Translations of almost every record studied are given. It is shown that although tides play a dominant long-term role in producing variations in Earth's rate of rotation - causing a gradual increase in the length of the day - there are significant, and variable non-tidal changes in opposition to the main trend.
Author | : Tony Jones |
Publisher | : CRC Press |
Total Pages | : 199 |
Release | : 2000-01-01 |
Genre | : Science |
ISBN | : 9780750306409 |
Download Splitting The Second Book in PDF, Epub and Kindle
Until the 1950s timekeeping was based on the apparent motion of the Sun that in turn reflected the rotation of the Earth on its axis. But the Earth does not turn smoothly. By the 1940s it was clear that the length of the day fluctuated unpredictably and with it the length of the second. Astronomers wanted to redefine the second in terms of the motions of the Moon and the planets. Physicists wanted to dispense with astronomical time altogether and define the second in terms of the fundamental properties of atoms. The physicists won. The revolution began in June 1955 with the operation of the first successful atomic clock and was complete by October 1967 when the atomic second ousted the astronomical second as the international unit of time. Splitting the Second: The Story of Atomic Time presents the story of this revolution, explaining how atomic clocks work, how more than 200 of them are used to form the world's time, and why we need leap seconds. The book illustrates how accurate time is distributed around the world and what it is used for. It concludes with a look at the future of timekeeping.