What are the four multiples of second?
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The second (symbol: s), sometimes abbreviated sec., is the name of a unit of time. It is one of the seven SI base units. It is the time taken by 9,192,631,770 cycles of radiation that comes from electrons moving between two energy levels of the caesium-133 atom.
Other (non-SI) units of time are defined in terms of the second. There are 86,400 seconds in one day, 3,600 seconds in one hour, and 60 seconds in one minute.
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