Re: Resonant Frequency

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Goinbonkers-at-aol-dot-com>

Yes,   I checked a wide variety of coil diameters and wire gauges, and it
always came out the same.   I am not saying there's any magic to it, but who
knows?  Tesla seemed to like low aspect ratio coils - at least for the
secondaries of his magnifiers. 
Mike 

>
> Hi Mike, 
>
> >   I think I mentioned this before, but from what I  calculated,  a 
> closewound coil with no topload and an aspect ratio of approximately 0.30 
> will result in a quarter wave resonant coil. 
>
> Is that ratio H/D? 
>
> Dave 
>
>