RE: this was probably really stupid

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Daniel Kline" <daniel_kline-at-med.unc.edu> 



 > -----Original Message-----
 > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > Sent: Wednesday, May 26, 2004 1:35 PM
 > To: tesla-at-pupman-dot-com
 > Subject: Re: this was probably really stupid
 >
 >
 > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 >
 >
 > Ed:
 >
 > I have always wondered how these long distance EHV lines
 > avoid producing
 > excessive corona.
 >
 > The cables do not appear to be very large in diameter ---
 > perhaps an inch or
 > two at best.  With that small radius and diameter, why don't they emit
 > tremendous corona?
 >
 > With corona inception potential around 67 kV per inch (30
 > kV/cm) they should
 > be glowing a lot with their small diameters.  Especially in
 > rainy weather.
 >
 > Dr. Resonance

Down in the Florida Keys, the transmission lines have corona where the
wires contact the insulators.
It's a constant "snap, crackle and pop" too. It takes a few minutes to
get your eyes accustomed to
the necessary darkness, but I've seen it several times. I'm guessing the
humid salt air has something
to do with it. Next time, I'm taking a pair of binoculars so I can see
the effect "close up".
Dan K.