Time: From Earth Rotation to Atomic Physics

Time: From Earth Rotation to Atomic Physics PDF Author: Dennis D. McCarthy
Publisher: Cambridge University Press
ISBN: 1107197287
Category : Science
Languages : en
Pages : 403

Get Book Here

Book Description
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.

Time: From Earth Rotation to Atomic Physics

Time: From Earth Rotation to Atomic Physics PDF Author: Dennis D. McCarthy
Publisher: Cambridge University Press
ISBN: 1107197287
Category : Science
Languages : en
Pages : 403

Get Book Here

Book Description
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.

Time and the Earth’s Rotation

Time and the Earth’s Rotation PDF Author: D.D. McCarthy
Publisher: Springer Science & Business Media
ISBN: 9400993684
Category : Science
Languages : en
Pages : 329

Get Book Here

Book Description
IAU Symposium No. 82, "Time and the Earth's Rotation", met to discuss modern research in the field of the rotation of the Earth with particu lar emphasis on the role of new observational techniques in this work. The use of these techniques has prompted a new look at the definitions of the traditional reference systems and the concepts of the rotation of the Earth around its center of mass. Specific topics discussed were time, polar motion, reference systems, conventional radio interferometry, very'long baseline interferometry (VLBI), Doppler satellite methods, satellite laser ranging, lunar laser ranging, and geophysical research concerning the Earth's rotation. Improvement in the accuracy of the observations is a key to possible solutions of the many unsolved problems remaining in this field. It appears that such improvement, using both classical and new techniques, is forthcoming in the near future. This will surely contribute to a better understanding of some of the long-standing questions concerning the rotation of the Earth around its center of mass and lead to an improved knowledge of the rotating, deformable Earth. This volume contains the papers presented at IAU Symposium No. 82 as well as the discussions provoked by these papers. It is hoped that it captures the principal points of the meeting and that it will contribute not only to a better understanding of existing problems, but also to future research in time and the Earth's rotation.

Historical Eclipses and Earth's Rotation

Historical Eclipses and Earth's Rotation PDF Author: F. Richard Stephenson
Publisher: Cambridge University Press
ISBN: 0521461944
Category : Science
Languages : en
Pages : 577

Get Book Here

Book Description
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.

Time and the Earth’s Rotation

Time and the Earth’s Rotation PDF Author: D.D. McCarthy
Publisher: Springer
ISBN: 9789027708939
Category : Science
Languages : en
Pages : 351

Get Book Here

Book Description
IAU Symposium No. 82, "Time and the Earth's Rotation", met to discuss modern research in the field of the rotation of the Earth with particu lar emphasis on the role of new observational techniques in this work. The use of these techniques has prompted a new look at the definitions of the traditional reference systems and the concepts of the rotation of the Earth around its center of mass. Specific topics discussed were time, polar motion, reference systems, conventional radio interferometry, very'long baseline interferometry (VLBI), Doppler satellite methods, satellite laser ranging, lunar laser ranging, and geophysical research concerning the Earth's rotation. Improvement in the accuracy of the observations is a key to possible solutions of the many unsolved problems remaining in this field. It appears that such improvement, using both classical and new techniques, is forthcoming in the near future. This will surely contribute to a better understanding of some of the long-standing questions concerning the rotation of the Earth around its center of mass and lead to an improved knowledge of the rotating, deformable Earth. This volume contains the papers presented at IAU Symposium No. 82 as well as the discussions provoked by these papers. It is hoped that it captures the principal points of the meeting and that it will contribute not only to a better understanding of existing problems, but also to future research in time and the Earth's rotation.

The Earth's Variable Rotation

The Earth's Variable Rotation PDF Author: Kurt Lambeck
Publisher: Cambridge University Press
ISBN: 9780521673303
Category : Mathematics
Languages : en
Pages : 468

Get Book Here

Book Description
An analysis of the irregular rotation of the Earth and the geophysical mechanisms responsible for it.

Relating Time to the Earth's Variable Rotation

Relating Time to the Earth's Variable Rotation PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 19

Get Book Here

Book Description
With the beginning of the 21st Century, the timing community finds itself again facing a decades-old problem of how to synchronize a uniform time scale with time derived from the Earth's rotation. Atomic time is the basis for most everyday timing applications, However, time astronomically determined from the Earth's rotation is essential for other applications including navigation. The history of relating atomic time to the Earth's rotation is presented, including background information related to the current synchronization method of leap seconds.

Growth Rhythms and the History of the Earth's Rotation

Growth Rhythms and the History of the Earth's Rotation PDF Author: Gary D. Rosenberg
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 584

Get Book Here

Book Description


Encyclopedia of the Solar System

Encyclopedia of the Solar System PDF Author: Lucy-Ann McFadden
Publisher: Elsevier
ISBN: 0080474985
Category : Science
Languages : en
Pages : 987

Get Book Here

Book Description
Long before Galileo published his discoveries about Jupiter, lunar craters, and the Milky Way in the Starry Messenger in 1610, people were fascinated with the planets and stars around them. That interest continues today, and scientists are making new discoveries at an astounding rate. Ancient lake beds on Mars, robotic spacecraft missions, and new definitions of planets now dominate the news. How can you take it all in? Start with the new Encyclopedia of the Solar System, Second Edition. This self-contained reference follows the trail blazed by the bestselling first edition. It provides a framework for understanding the origin and evolution of the solar system, historical discoveries, and details about planetary bodies and how they interact—and has jumped light years ahead in terms of new information and visual impact. Offering more than 50% new material, the Encyclopedia includes the latest explorations and observations, hundreds of new color digital images and illustrations, and more than 1,000 pages. It stands alone as the definitive work in this field, and will serve as a modern messenger of scientific discovery and provide a look into the future of our solar system. · Forty-seven chapters from 75+ eminent authors review fundamental topics as well as new models, theories, and discussions · Each entry is detailed and scientifically rigorous, yet accessible to undergraduate students and amateur astronomers · More than 700 full-color digital images and diagrams from current space missions and observatories amplify the chapters · Thematic chapters provide up-to-date coverage, including a discussion on the new International Astronomical Union (IAU) vote on the definition of a planet · Information is easily accessible with numerous cross-references and a full glossary and index

Earth's Seasons & Cycles

Earth's Seasons & Cycles PDF Author: Christine Dugan
Publisher: Teacher Created Materials
ISBN: 9780743989589
Category : Juvenile Nonfiction
Languages : en
Pages : 16

Get Book Here

Book Description
Each book in 8143--TIME For Kids Nonfiction Readers: Fluent Plus Kit is available in a set of six.For add-on purchases, each 6-pack includes 6 copies of this title and a lesson plan, packaged in a self-sealing vinyl bag.Word Count: 1147TCM (Teacher Created Materials) Level: 3.6Guided Reading Level: PEarly Intervention Level: 22DRA (Developmental Reading Assessment) Level: 38

Earth, Sun and Moon, Grades 3-6

Earth, Sun and Moon, Grades 3-6 PDF Author: Bob DeWeese
Publisher:
ISBN: 9781557992970
Category : Creative activities and seat work
Languages : en
Pages : 16

Get Book Here

Book Description
Here are teacher demonstrations, student hands-on activities, and student journals, plus a two-sided poster in each book that presents information on one side, and a learning game on the other. It is science education at its best, balancing process and content.