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Predicting the Future of Atomic Clocks Using the Theory of Evolution

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Release : 2008
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Book Synopsis Predicting the Future of Atomic Clocks Using the Theory of Evolution by : Ben Entezam

Download or read book Predicting the Future of Atomic Clocks Using the Theory of Evolution written by Ben Entezam. This book was released on 2008. Available in PDF, EPUB and Kindle. Book excerpt: The trend of technology evolution plays a very important role to understand how and why products evolve over time and define strategies of further improvements of products. The trend of evolution is based on the fact that all the products, process or technical systems will evolve over time. A cesium atomic clock is the most accurate realization of a reference unit that mankind has yet achieved. The commercial cesium atomic clock is very mature and the demand for this type of clocks expected to be flat. A size reduction is possible due to new physics improvement by using optical pumping technique, but no major changes in performance and prices are expected. The masers outperform the high performance cesium clocks for a time period of sub seconds to one day. The hydrogen maser is very mature product like cesium and the design has remained the same for the last 30 years. The product is expected to remain as presently available. Rubidium atomic clocks provide enhanced accuracy, stability and timing precision compared to quartz-based technologies. This market is large enough to support continuing technological innovation. The world's first commercially available miniature developed by Symmetricom in 2008 marks a major step toward in the evolution of rubidium atomic clocks. It is predicted that future of rubidium oscillators will be based on coherent population trapping technology. The miniature rubidium clocks will be smaller, cheaper, and will be operated by small batteries.

The Quantum Beat

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Release : 2013-03-09
Genre : Science
Kind : eBook
Book Rating : 235/5 ( reviews)

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Book Synopsis The Quantum Beat by : Fouad G. Major

Download or read book The Quantum Beat written by Fouad G. Major. This book was released on 2013-03-09. Available in PDF, EPUB and Kindle. Book excerpt: This work reviews the principles underlying quantum-based atomic clocks, with introductory chapters placing them in context with the development of mechanical clocks and electronic quartz-controlled clocks. The book details design principles of the rubidium, cesium, hydrogen maser, and mercury ion standards; changes enabled by the advent of the laser; and the time-based global navigation systems, Loran-C and the Global Positioning System. The new edition includes such recent developments as clocks based on quantum resonance at optical frequency in individual ions confined in miniature electromagnetic traps. The Quantum Beat explores the subject with a minimum of mathematical formalism.

Around the World Atomic Clocks

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Release : 1972
Genre : Atomic clocks
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Book Synopsis Around the World Atomic Clocks by : Joseph Carl Hafele

Download or read book Around the World Atomic Clocks written by Joseph Carl Hafele. This book was released on 1972. Available in PDF, EPUB and Kindle. Book excerpt: Four cesium beam clocks flown around the world on commercial jet flights during October 1971, once eastward and once westward, recorded directionally dependent time differences which are in good agreement with predictions of conventional relativity theory. Relative to the atomic time scale of the U.S. Naval Observatory, the flying clocks lost 59 ± 10 nanoseconds during the eastward trip and gained 273 ± 7 nanoseconds during the westward trip, where the errors are the corresponding standard deviations. These results provide an unambiguous empirical resolution of the famous clock 'paradox' with macroscopic clocks.

From Sundials to Atomic Clocks

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Release : 1999-01-01
Genre : Science
Kind : eBook
Book Rating : 139/5 ( reviews)

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Book Synopsis From Sundials to Atomic Clocks by : James Jespersen

Download or read book From Sundials to Atomic Clocks written by James Jespersen. This book was released on 1999-01-01. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Splitting The Second

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Release : 2000-01-01
Genre : Science
Kind : eBook
Book Rating : 409/5 ( reviews)

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Book Synopsis Splitting The Second by : Tony Jones

Download or read book Splitting The Second written by Tony Jones. This book was released on 2000-01-01. Available in PDF, EPUB and Kindle. Book excerpt: 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.

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