Evolution of Time Measurement in Astronomy
Astronomical phenomena, such as the waxing and waning of the Moon, the succession of days and nights and the pattern of the seasons define a time which is basically cyclical. During many centuries, rather simple devices, such as water clocks or astrolabs and, later on, mechanical clocks, have been used by astronomers for defining realistic but low accuracy time scales. Lately, the atomic time, with its unprecedented precision, has open the way to a more accurate investigation of astronomical phenomena. From cyclical, the time of mankind has become definitely linear and the astronomers seem to have lost its control ...
KeywordsGlobal Position System GLObal NAvigation Satellite System Earth Rotation Universal Time Atomic Clock
Unable to display preview. Download preview PDF.
- 1.Audoin, C. & Guinot, B. 1998, Les Fondements de la Mesure du Temps, Masson, Paris.Google Scholar
- 2.Biémont, E. 2000, Rythmes du temps, Astronomie et Calendriers, De Boeck Université, Paris-Bruxelles.Google Scholar
- 3.Fraser, J.T. 1987, Time, The Familiar Stranger, Tempus Books, Washington.Google Scholar
- 4.Lippincott, K. 1999, The Story of Time, Merrell Holberton Publ., London.Google Scholar
- 5.Lyne, A.G. & Smith, F.G. 1998, Pulsar Astronomy (2nd Ed.), Cambridge University Press.Google Scholar
- 6.Manchester, R.N. & Taylor, J.H. 1977, Pulsars, San Francisco, CA, Freeman.Google Scholar
- 7.Murdin, P. (Ed.) 2001, Encyclopedia of Astronomy and Astrophysics, Institute of Physics Publ., London.Google Scholar
- 8.Richards, E.G. 1998, Mapping Time, The Calendar and its History, Oxford Univ. Press.Google Scholar