> Hi, > the GPS system obviously counts seconds, and weeks. When the solar > year develops a phase > difference of more than half a second the UTC crowd consider a leap > second, so what is the current > rotational velocity of the Earth, either WRT the Sun or the stars? In > seconds. > I could find many answers on Google but none that seemed good enough > to set your clock by. > By clock I just mean a rubidium clock that is harmonised to the GPS > system. > cheers, Neville Michie
One leap second every few years is equivalent to about 1e-8. So the answer to your question only starts to matter when measurements are more precise than 8 digits. See also: <Earth: An Oscillator and Frequency Standard> http://www.leapsecond.com/museum/earth/ /tvb _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
