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The Science Of Time 2016

Author: Elisa Felicitas Arias
Publisher: Springer
ISBN: 3319599097
Size: 52.42 MB
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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 challenges of 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.

Celestial Navigation For Yachtsmen

Author: Mary Blewitt
Publisher: Bloomsbury Publishing
ISBN: 1472942868
Size: 43.36 MB
Format: PDF, Docs
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The 13th edition of this bestselling book is proof of the success of Mary Blewitt's concise and clear style in explaining a particularly difficult skill, and it has been the bible for many generations of ocean navigators. Since this book was first published, the huge advances in electronic navigation have transported most offshore navigators to a world of press-button convenience. However, there is still a vital need for traditional skills when things go wrong: batteries can fail, aerials go overboard, and electronics have been known to get wet. A bestseller for over 65 years, Celestial Navigation for Yachtsmen is a model of simplicity and clarity. The worked examples require only straightforward addition and subtraction, which explains why this book has truly earned its reputation for admirable conciseness and for making a tricky subject easy to understand. This edition has been thoroughly revised by Andy Du Port, the highly respected ex-editor of Reeds Almanacs. 'The "bible" of navigation for generations of yachtsmen... worth its weight in gold' Sailing

2019 Nautical Almanac

Author: Uk Hydrographic
Publisher:
ISBN: 9781937196851
Size: 37.46 MB
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The cornerstone for all celestial navigation, listing the celestial bodies used for navigation, a sight reduction table, and other information valuable to the offshore navigator. The content of this edition is identical to the United States Naval Observatory edition. Paradise Cay Publications is the only entity in the United States other than the US Government legally authorized to publish the full contents of the Nautical Almanac.

Astronomical Almanac For The Year 2018

Author: Defense Dept., Navy, Nautical Almanac Office
Publisher: Government Printing Office
ISBN: 9780707741772
Size: 21.59 MB
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The Astronomical Almanac is a joint publication of the U.S. Nautical Almanac Office, United States Naval Observatory (USNO) in the United States, Her Majesty's Nautical Almanac Office (HMNAO), and the United Kingdom Hydrographic Office (UKHO). This annual publication contains precise ephemerides of the Sun, Moon, planets, and satellites; data for eclipses and other astronomical phenomena for a given year; and serves as a worldwide standard for such information. Related products: The Astronomical Almanacs & Phenomena collection can be found here: https://bookstore.gpo.gov/catalog/transportation-navigation/almanacs-navigation-guides/astronomical-almanacs-phenomena The Almanacs & Navigation Guides collection is available here: https://bookstore.gpo.gov/catalog/transportation-navigation/almanacs-navigation-guides Other products produced by the United States Navy, Naval Observatory (USNO) can be found here: https://bookstore.gpo.gov/agency/927

L Ngengrad

Author: Dava Sobel
Publisher: ebook Berlin Verlag
ISBN: 3827072360
Size: 55.19 MB
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John Harrison, ein schottischer Uhrmacher, setzte sich ein ehrgeiziges und unmöglich erscheinendes Ziel: eine Methode zu ersinnen, die es Seeleuten ermöglicht, den genauen Längengrad ihrer Position auf See zu bestimmen. Über vierzig Jahre arbeitete Harrison wie besessen an der Herstellung eines perfekten Chronometers und kam schließlich — trotz Missgunst und zahlreicher Anfeindungen — zum Erfolg. Dava Sobels in luzider Prosa erzählte Geschichte dieser wissenschaftlichen Gralssuche wurde ein überwältigender internationaler Erfolg.

Von Den Neu Entdeckten Planeten

Author: Johann Elert Bode
Publisher:
ISBN: 9783741133091
Size: 76.63 MB
Format: PDF
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Von den neu entdeckten Planeten ist ein unveranderter, hochwertiger Nachdruck der Originalausgabe aus dem Jahr 1784. Hansebooks ist Herausgeber von Literatur zu unterschiedlichen Themengebieten wie Forschung und Wissenschaft, Reisen und Expeditionen, Kochen und Ernahrung, Medizin und weiteren Genres.Der Schwerpunkt des Verlages liegt auf dem Erhalt historischer Literatur.Viele Werke historischer Schriftsteller und Wissenschaftler sind heute nur noch als Antiquitaten erhaltlich. Hansebooks verlegt diese Bucher neu und tragt damit zum Erhalt selten gewordener Literatur und historischem Wissen auch fur die Zukunft bei."