RE: (Fwd) 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 Malcolm,

>Having spent half a lifetime repairing oscilloscopes as well as calibrating
them I must strongly disagree with the statements in that paragraph. Bear in
mind that you can invert one channel of most if not all scopes. The fact
that there is no DC shift in a pure sinusoidal waveform when you do that
speaks volumes.

I've been looking for the reference that I derived my information from.  I
cannot find it just yet.

The DC shift has been shown by some experimenters to exist.

The shift was explained just as I am presenting it, that there are two
opposite polarity waves working together.

While we are on the topic, what is the current scientific explanation for
the variation of voltage in a damped sine wave?  What force is believed to
determine when the wave will reverse direction?  I could use a little
education on the current theory if you would indulge me.  I believe this is
useful information for Tesla coils in general.

Dave