[Info-vax] IE8 got me too :-( Sorry Jeff.

[glen herrmannsfeldt]

George Cornelius <cornelius at eisner.decus.org> wrote:
 
> Oops. That would be 46-pole.  They come in North/South pairs.  Like
> bridge players, except that East/West aren't at the table - and don't
> even have a place to sit.

Many years ago (about when I was 10) I went on a tour of the
Shasta Dam power plant and was surprised to learn that the 
generators rotate at 20Hz instead of the expected 60Hz.

Not so many years ago we toured Grand Coulee and I was even
more surprised to learn that they run at 72RPM.  I suppose
for something that big it can't turn at 20Hz, but that seems
to require 100 poles.  I was then wondering if the subharmonics
can be seen in the power line due to any non-uniformity of
the poles.  It might take some averaging, but it seems that
it might be there.

-- glen