<P> The SI derived unit of frequency is the hertz ( Hz ) , named after the German physicist Heinrich Hertz . One hertz means that an event repeats once per second . A previous name for this unit was cycles per second ( cps ) . The SI unit for period is the second . </P>
<P> The SI derived unit of frequency is the hertz ( Hz ) , named after the German physicist Heinrich Hertz . One hertz means that an event repeats once per second . A previous name for this unit was cycles per second ( cps ) . The SI unit for period is the second . </P>
what is the si unit of time period
what is the si unit of time period
the second
the second