A nanosecond (ns) is a unit of time in the metric system, equal to one billionth (10-9) of a second (s). The second is the base unit of time in the International System of Units (SI), making the ...
THE experience gained 1 with the cæsium resonator has shown that it can be used for establishing a unit of time interval with great ease and accuracy, and it is now important to decide how this new ...
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