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The second is the [[Système international|SI]] unit for [[time]]. | The '''second''' is the [[Système international|SI]] unit for [[time]]. It is defined as the time in which light travels approximately 299792458 [[meter]]s, or about 299792 [[kilometer]]s. There are 60 seconds in a [[minute]], 3600 seconds in an [[hour]], and 86400 seconds in a [[day]]. | ||
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Revision as of 17:09, 18 December 2008
The second is the SI unit for time. It is defined as the time in which light travels approximately 299792458 meters, or about 299792 kilometers. There are 60 seconds in a minute, 3600 seconds in an hour, and 86400 seconds in a day.
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