In message ,
whisky-dave writes
On Thursday, May 2, 2013 3:51:25 PM UTC+1, harry wrote:






It's ******** because as the frequency is the same everywhere in the

UK, what's the point of measuring it?

The ******** is on here too about how to measure it.

My grid link PV inverter measures the frequency, so any time you want

to know I can tell you.

It's usually less than 50Hz BTW.

http://www.gridwatch.templar.co.uk/

15:55 50.056Hz so what is it at your end.

checking my office with a maplin plugin thingy (probabley not that
acurate but :-
212V 51Hz, with the occasional 211V and 51Hz

Is it still not true that synchronous clocks are kept accurate by
ensuring that the correct number of cycles* (in the preceding 24 hours)
have been delivered by 8am every morning?
*My calculator tells me that the mains frequency should be 4,320,000
cycles per day.
--
Ian