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19 - International Activities

Published online by Cambridge University Press:  01 October 2018

Dennis D. McCarthy
United States Naval Observatory
P. Kenneth Seidelmann
University of Virginia
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Time is an international standard involving many national and international organizations that deal with the aspects of time and timekeeping. The treaty of the meter in 1875 established the Bureau International des poids et mesures (BIPM), whose activities now include time. The Conférence Générale des poids et mesures (CGPM) and the Comité international des poids et mesures (CIPM) were also established at that time. Scientific unions, such as the International Astronomical Union, the International Union of Geodesy and Geophysics, and the International Telecommunications Union, promote investigations of scientific and technical problems. Service organizations, such as the International Earth Rotation and Reference Systems Service, the International VLBI Service, International Laser Ranging Service, International GNSS Service , and International DORIS Service, deal with coordination and analysis of observations related to the Earth’s orientation.
Publisher: Cambridge University Press
Print publication year: 2018

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