RE: Wireless power transmission (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 20 Jun 2007 08:30:52 -0500
From: David Thomson <dwt@xxxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: Wireless power transmission (fwd)

Hi Colin,

> If you want to use a sound analogy, it's like trying to 
> propagate sound wave through an almost perfectly evacuated 
> chamber (the low density of air molecule reflecting the very 
> low ion density).  

> If you want a more detailed analysis to back up the above 
> description, why not tell me what density of ions you believe 
> are present in air near a Tesla coil?  It's then fairly easy 
> to work out the "electrostatic stiffness" of the media and 
> whether it can support longitudinal sound/plasma waves.

This sounds like a reasonable proposition.  I don't have data on the ion
density near a Tesla coil, but perhaps someone else on the list does.  

Dave