Title: The Science of Time 2016: Time in Astronomy & Society, Past, Present and Future (Astrophysics and Space Science Proceedings, 50)
Publisher: Springer
Publication Date: 2017
Language: English
ISBN 10: 3319599089
ISBN 13: 9783319599083
Binding: Hardcover
Condition: New

About this title

Synopsis

The uses of time in astronomy - from pointing telescopes, coordinating and processing observations, predicting ephemerides, cultures, religious practices, history, businesses, determining Earth orientation, analyzing time-series data and in many other ways - represent a broad sample of how time is used throughout human society and in space. Time and its reciprocal, frequency, is the most accurately measurable quantity and often an important path to the frontiers of science. But the future of timekeeping is changing with the development of optical frequency standards and the resulting challenges of distributing time at ever higher precision, with the possibility of timescales based on pulsars, and with the inclusion of higher-order relativistic effects. The definition of the second will likely be changed before the end of this decade, and its realization will increase in accuracy; the definition of the day is no longer obvious. The variability of the Earth's rotation presents challengesof understanding and prediction.

In this symposium speakers took a closer look at time in astronomy, other sciences, cultures, and business as a defining element of modern civilization. The symposium aimed to set the stage for future timekeeping standards, infrastructure, and engineering best practices for astronomers and the broader society. At the same time the program was cognizant of the rich history from Harrison's chronometer to today's atomic clocks and pulsar observations. The theoreticians and engineers of time were brought together with the educators and historians of science, enriching the understanding of time among both experts and the public.

About the Author

Felicitas Arias, Ph.D., is Director of the Time Department, International Bureau for Weights and Measures in S�vres near Paris.Responsible for the maintenance of Universal Coordinated Time.

Ludwig Combrinck, Ph.D., is Acting Managing Director of the Hartebeesthoek Radio Astronomy Observatory (HartRAO), National Research Foundation, South Africa. His main interests are space geodesy and general relativity.

Pavel Gabor, Ph.D., is Vice Director of the Vatican Observatory responsible for its observational facilities in Arizona. He is involved in the robotic upgrades of three telescopes and other astronomical instrumentation projects. As a Jesuit priest and an official of the Holy See, he also studies timekeeping, its history and symbolism.

Catherine Hohenkerk, HM Nautical Almanac Office (HMNAO), UK Hydrographic Office, a long standing member of HMNAO, fellow of the Royal Institute of Navigation, Chair of the long standing IAU Division A

working group Standards of Fundamental Astronomy (SOFA) and President of IAU Division A Commission for Fundamental Standards.

P.Kenneth Seidelmann, Research Professor of Astronomy at the Universityof Virginia; former director of astrometry directorate at the U.S. Naval Observatory, Co-editor of the Explanatory Supplement to the Astronomical Almanac, Co-author of books on astrometry, time, and celestial mechanics and astrodynamics, and author of many scientific papers.

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