Question

what is the accurate measurement of time

Answer 1

Answer:

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Explanation:

A stopwatch can measure time correctly up to a fraction of a second. A digital watch can measure time up to a fraction of second whereas an atomic clock is the most accurate timekeeper and is based on characteristic frequencies of radiation emitted by certain atoms having a precision of about 1 second in 300,000 years.

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Answer 2

Explanation:

Unlike an atomic clock, which uses independent atoms to measure one second, the new quantum gas squeezes atoms together to measure time more accurately than ever before. Since 1967, one second has been defined as the time it takes for one caesium electron to oscillate exactly 9,192,631,770 times.