Question

measurement of time​

Answer 1

Answer:

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A unit of time or midst unit is any particular time interval, used as a standard way of measuring or expressing duration. The base unit of time in the International System of Units (SI) and by extension most of the Western world, is the second, defined as about 9 billion oscillations of the caesium atom.

Answer 2

• SI unit of time is second. It is scaler quality. The standard for unit of time, the second (s) , is the exact duration of 9,192,631,770 cycles of radiation associated with the transition between the two hyperfine levels to the ground state of cesium.