RE: longitudinal waves

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

Original poster: "David Thomson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dave-at-volantis-dot-org>

Hi Steve,

> What are you going to do to prevent normal EM pickup of the radio waves?
Two wires spaced 1/2 wavelength apart, oriented at right angles to the
source sounds like it'll pick up normal EM waves just fine.

The longitudinal wave has no voltage associated with it, so due to the
quarter wave construction (more or less) of a radio antenna, the zero
voltage will be near the level of ground.  Placing my long wires near the
ground should help eliminate the EM and RF waves.

It just occurred to me tonight what the difference between a spiral coil and
solenoid coil boils down to.

Using my pulse model as a general EM/LW model, there are at least two
distinct components to a pulse.  There is the voltage component that pretty
much peaks above and below the pulse source, and there is the longitudinal
component that spreads indefinitely or until the energy is absorbed by
another mass.

A solenoid coil has a vertical construction.  It's aligned with the voltage
component of the pulse, and sure enough, solenoid coils are great for
pushing the voltage.

The reason why the same techniques don't work with a flat spiral coil is
because the flat spiral configuration is aligned with the longitudinal
component.  Almost all the power going into a flat spiral coil will directly
increase the longitudinal energy.  This is no doubt the reason Tesla was
building his Wardencliffe system with flat spiral coils.  This also explains
why Tesla was able to get huge sparks from his Colorado Springs experiments.
Tesla must have fully understood these two components to a pulse quite well.

But this leaves open the possibility of a third type of coil.  A coil that
utilizes the y axis of the pulse.  This could be the most interesting since
it creates rotational energy.  I'll have to give this some thought.

... That didn't take long.  I've got it.  A toroid shaped primary around
either a solenoid or flat spiral secondary coil should put a great amount of
energy into the rotational component of the pulse.  Gosh, I need a staff and
a laboratory to keep up with all these projects.

Dave