From sundials to atomic clocks: Understanding time and frequency

Details From sundials to atomic clocks: Understanding time and frequency From sundials to atomic clocks: Understanding time and frequency

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977nbs..reptr....j&link_type=abstract

Final Report National Bureau of Standards, Washington, DC.

Astronomy and Astrophysics

Astronomy

Atomic Clocks, Frequency Standards, Time Measuring Instruments, Histories, International Cooperation, Time Measurement, Time Signals

Scientific paper

A historical review of clocks and watches leads into a discussion of today's most sophisticated time piece, the atomic clock. The need for highly accurate atomic time to a millonth of a second or better, is described as it relates to a number of modern-day activities and systems such as advanced electronic communication systems, satellite navigation systems, and precise scientific measurements in radio astronomy and in tests of the theory of relativity. Discussion of the relationship of time to mathematics, physics, astronomy, and automation is included.

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