DocumentCode
1353507
Title
Time and frequency in fundamental metrology
Author
Petley, Brian W.
Author_Institution
NPL, Teddington, UK
Volume
79
Issue
7
fYear
1991
fDate
7/1/1991 12:00:00 AM
Firstpage
1070
Lastpage
1076
Abstract
The author shows that because time and frequency are the most accurately measured physical quantities, it is desirable to tie other physical quantities to time and frequency measurements. A review of the progress that has been made in this direction along with speculation on possibilities for the future are given. The role of time and frequency in a wide range of measurements is discussed, particularly those involving the International System of Units (SI) and fundamental physical constants
Keywords
constants; frequency measurement; measurement standards; time measurement; units (measurement); International System of Units; SI; electrical variables measurement; frequency measurements; fundamental physical constants; length; magnetometry; mass spectrometry; measurement units; time measurement; velocity; Assembly; Extraterrestrial measurements; Frequency measurement; International Committee; Marine vehicles; Metrology; Particle measurements; Thermodynamics; Time measurement; Weight measurement;
fLanguage
English
Journal_Title
Proceedings of the IEEE
Publisher
ieee
ISSN
0018-9219
Type
jour
DOI
10.1109/5.84984
Filename
84984
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