Realizable caesium frequency standards use a strong electromagnet to deliberately introduce a magnetic field which overwhelms that of the Earth.
22.
Since time is the reciprocal of frequency, it is relatively easy to derive a time standard from a frequency standard.
23.
Until now, mobile phone users have not been able to use the same phone across continents, due to differing frequency standards.
24.
"' NIST-F2 "'is a caesium fountain atomic clock that, along with NIST-F1, serves as the United States'primary time and frequency standard.
25.
Six Block IIa satellites were launched in 1985 1986 with improved time and frequency standards over the prototypes, and increased frequency stability.
26.
An example of this is the NIST-F1 atomic clock, one of the national primary time and frequency standards of the United States.
27.
And it will ensure that the state's power grid maintains proper voltage and frequency standards and has sufficient power reserves for emergencies.
28.
All resulting frequencies after mixing are related to the frequency standard except those experiencing doppler shift . Consequently, the doppler effects are measurable.
29.
A shared time and frequency standard must be also be maintained if the receiver has no direct line of sight of the transmitter.
30.
The carrier of time signal transmitters, medium wave broadcasting stations is derived from an atomic clock and can be therefore used as frequency standard.
