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A second is defined as the duration of 9,192,631,770 cycles of the radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom. This definition, established in 1967, is based on atomic timekeeping, which allows for extremely precise measurements. In everyday terms, a second is the basic unit of time in the International System of Units (SI).

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1mo ago

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Related Questions

What is proper length of rocket per second?

Length is not measured in "per second".


Is the second and the fourth finger has the same length?

Yes, the second and the fourth finger are the same length.


The lenth of second's pendulum of the earth is about 1 m What should be the length of second's pendulum on the moon?

If the length of the second pendulum of the earth is about 1 meter, the length of the second pendulum should be between 0.3 and 0.5 meters.


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25m


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miliseconds


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the length of the day is not a fixed unit of time


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For length Meter and for time Second.


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1.0002m


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A centimetre is a unit of length. Centimetres per second is a unit of speed. The two units are therefore incompatible.


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By unit of mass add time and conversion ,we can say that SI Unit of length mass is kg and SI Unit of time is seconds (sec).


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In horse racing what is meant by one length?

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