A standard clock comprises a frequency standard, a device to count off the cycles of the oscillation emitted by the frequency standard, and a means of displaying or outputting the result.
42.
The Time and Frequency Standards Section in the PMG Research Laboratories at 59 Little Collins Street, Melbourne maintained the frequency checks to ensure that the system was " on time ".
43.
Hyperfine qubits are extremely long-lived ( decay time of the order of thousands to millions of years ) and phase / frequency stable ( traditionally used for atomic frequency standards ).
44.
A standard clock comprises a frequency standard, a device to count off the cycles of the oscillation emitted by the frequency standard, and a means of displaying or outputting the result.
45.
Caesium clocks are the most accurate & commercially produced time and frequency standards, and serve as the primary standard for the definition of the second in SI ( the metric system ).
46.
Current frequency standards such as atomic clocks operate in the microwave region of the spectrum, and the frequency comb brings the accuracy of such clocks into the optical part of the electromagnetic spectrum.
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A new atomic clock, the NIST F-1, is now the primary frequency standard for the United States and will contribute information to the atomic clocks around the world that define the official world time.
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Despite the suburb being well serviced by three modes of public transport, no formal coordination exists between them aside from the TransLink ( South East Queensland ) fare structure and relatively high frequency standards.
49.
When Time & Frequency Standards moved from 59 Collins Street to Clayton, the control signals were duplicated and a second bank of Primary standards installed so the cutover was transparent with no loss of service.
50.
Because it can be used as a frequency standard, the atomic clock could be installed by cellular phone companies in their base stations as an inexpensive means of improving signal stability and reducing signal fadeout, Liberman said.
