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U.S.A. National Committee Report, Fifteenth URSI General Assembly, Munich, September 1966: Commission 1, Radio Measurement Methods and Standards: Progress in Radio Measurement Methods and Standards
Author(s) -
Richardson John M.,
Beatty R. W.,
Birnbaum George,
Bussey H. E.,
Cohn Seymour B.,
Gerber E. A.,
Hudson George E.,
Mockler R. C.,
Selby M. C.,
Sykes R. A.,
Weinschel Bruno O.
Publication year - 1966
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/rds19661111333
Subject(s) - fifteenth , commission , general assembly , european commission , telecommunications , physics , environmental science , political science , engineering , law , business , acoustics , international trade , european union
Atomic frequency and time interval standards had advanced to such a high level of performance that in October 1964, the International Committee of Weights and Measures designated the ( F = 4, m F = 0) ⇄ ( F = 3, m F = 0) transition in the ground state of Cs 133 temporarily for the physical measurement of time.