Re: longitudinal waves

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

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

Tesla list wrote:
> 
> Original poster: "David Thomson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <dave-at-volantis-dot-org>
> 
> Hi Dave,
> 
> > One Assumes such waves ought to exist (....) at all freqs, and other freqs
> and sources are easier to work with...
> 
> They do exist at all frequencies.  Every EM wave is associated with a
> longitudinal and a rotational wave.  I can't imagine how it could happen any
> other way.
> 
> > >       There is a whole class of nearground and underground antennas,
> >>        for specialized applications in electromagnetic and radio
> >>        work.
> 
> I know there are underground antennas.  As you mentioned, they are ELF
> related.  But I'm not aware of any antenna structures designed to work
> directly off the ground.

	I suggest:
	Find a receiver with input terminals.
	Lay wires on the ground.
	Compare results with wires not connected to receiver and 
	connected to receiver.

	best
	dwp