Define second...
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Posted by ... ... 4 years ago
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Aman Barnwal 4 years ago
The second is the base unit of time in the International System of Units, commonly understood and historically defined as ¹⁄₈₆₄₀₀ of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.
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