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Ephemeris time

Published online by Cambridge University Press:  14 August 2015

G. M. Clemence
G. M. Clemence*
Affiliation:
Columbia University, New York, N. Y., and U. S. Naval Observatory, Washington, D. C.

Abstract

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In this article is described the measurement of time from a more general point of view than has been taken before. It is shown that mean solar time and ephemeris time are two particular applications of the general principle of measuring time by observing angular motions, a principle that can be applied to any angular motion whatever, provided that an adequate theory of the motion is available.

Type
Part II. The Rotation of the Earth
Information
Symposium - International Astronomical Union , Volume 11: The Rotation of the Earth and Atomic Time Standards , 1959 , pp. 33 - 35
Copyright
Copyright © American Astronomical Society 1959