10 Dec
2004
10 Dec
'04
8:23 p.m.
On Fri, 10 Dec 2004, Jules Richardson wrote:
Out of interest, why do we use 50Hz power in the UK
and 60Hz in the US?
(I don't mean why are they different, I mean why those numbers)
I saw yesterday a claim that the 60Hz in the US was a Tesla invention,
but the info didn't elaborate on why he chose that figure if so...
I don't know, but 60Hz is awfully convenient for calculating time
(with synch motors).
I guess you 50Hz people have to use square gears or something
to do 50/60ths :-)