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Define one kg mass , one meter , one second time

Sagot :

one kg mass refers to the total mass of irridiam plattinum rod kept in the Central beuro of weight and measurement of France at 0°celcius and

one atmospheric pressure.

One meter length refers to total length of irridiam plattinum rod kept in the Central beuro of weight and measurement of France at 0°celcius and

one atmospheric pressure.

One second time refers to total time taken by Ceassium-133 atom to complete vibratration of 91923631770 times...

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