27 Oct
2011
27 Oct
'11
5:47 p.m.
At least in
NA, mains frequency is very very stable. The entire
continent is in phase and clocked with very high precision. It's more
stable than a free-running digital clock.
Yes, the long-term stability will be very good, as the frequency is
adjusted to keep clocks in sync. But there are small short-term
variations all the time which you won't notice on a clock, but can
be measured easily. And if the lights were switched off ... :-)
inconceivable!
Monty