Re: A photographic tutorial of Pancake Coil winding...with movies...(fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 24 Jun 2007 16:24:10 -0700
From: Ed Phillips <evp@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: A photographic tutorial of Pancake Coil winding...with
    movies...(fwd)

Tesla list wrote:

>---------- Forwarded message ----------
>Date: Sun, 24 Jun 2007 08:59:07 -0500
>From: David Thomson <dwt@xxxxxxxxxxxx>
>To: 'Tesla list' <tesla@xxxxxxxxxx>
>Subject: RE: A photographic tutorial of Pancake Coil winding...with
>    movies...(fwd)
>
>Hi Ed,
>
>  
>
>>I think that just about anyone who has played with a 
>>coil much (at least one covered with some sort of varnish - 
>>I've never tried it without it) have observed similar 
>>[electrophorous] effects.  I believe the "wisdom on the 
>>street" is that there is rectification because of the shape
>>of the coil and the voltage gradient from it and that the 
>>result is charge stored in the insulating coating. 
>>    
>>
>
>That sounds reasonable to me.  However, the question is why does the charge
>fully restore after being discharged several times over a long period of
>time?  Where does the restored charge come from?  Does the rectified
>insulator material draw ions back from the immediate environment and store
>them again?  And if so, can a potential be inherently stored in a material
>such that drifting ions are simply handed a bunch of energy just for
>attaching to it?  Doesn't any of this strike you as odd?
>
>Dave
>
Ions aren't involved. Look up "electrophorous" and "electret" on the 
internet.

Ed