Re: magnetically quenched gaps

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
> 
> Ed... you mean, of course, the field was half a Tesla, right??  Granted, I
> find the Gauss a more useful unit (in terms of fields I work with), but, as
> long as we can argue about SI units, we might as well use the namesake one
> for the list....
> 
> >
> > In my experience Edmund is the very highest possible priced outfit
> > around, particularly for magnets.  Try wondermagnets or All
> > Electronics.  The old magnetron magnets were indeed almost 100 mm
> > diameter, but the newer ones are much smaller.  Remember, you have to
> > work over quite a large air gap so you'll need an efficient magnetic
> > circuit and a number of magnets in series to get enough of a field
> > across the gap.  The old arc transmitters used giant electromagnets for
> > the purpose, and ran at field strengths of as much as 5000 gauss!
> >
> > Ed
> >

	At tke time those things were built the field strength WAS 5000 gauss. 
Also, all of the magnetron magnets in use during WW2 were rated in
gauss.  Tesla as a unit didn't come along until much, much later.  I
don't believe in retroactive laws!!!!!!

Ed