Question

What is one second? Give definition.

Answer 1

Answer:

The second (abbreviation, s or sec) is the Standard International ( SI ) unit of time. One second is the time that elapses during 9,192,631,770 (9.192631770 x 10 9 ) cycles of the radiation produced by the transition between two levels of the cesium 133 atom. ... One second is equal to 1/86,400 of a mean solar day.

Explanation:

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Answer 2

Answer:

One second is the time that elapses during 9,192,631,770

(9.192631770×10^9) cycles of radiation produced by the transition between two levels of tge cesium 133 atoms.

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