[Prev][Next][Index][Thread]

RE: Just One Pop - voltage and charge

Subject:  RE: Just One Pop - voltage and charge
  Date:   Sat, 17 May 1997 12:36:13 -0400 (EDT)
  From:   richard hull <rhull-at-richmond.infi-dot-net>
    To:   Tesla List <tesla-at-pupman-dot-com>


At 04:40 PM 5/13/97 -0500, you wrote:
>Subject:  RE: Just One Pop - voltage and charge
>  Date:   Tue, 13 May 97 04:12:13 UT
>  From:  "William Noble" <William_B_Noble-at-msn-dot-com>
>    To:  "Tesla List" <tesla-at-pupman-dot-com>
>
>
>this might be consistant with 1 things I can imagine - 1. a high
>resistance, 
>or 2 you are not measuring what you think you are.  Maybe the sphere
>isn't 
>acting like a capacitor when you measure voltage on it??? if it's really 
>electrostatic, can't it take time for the charge to migrate around the
>surface 
>- particularly if there is some other kind of field in the region???
>anyway, 
>just a thought or two.
>
>
>[Bill] 

Bill,  I have explained to my satisfaction a number of points and all
are as
you say above.

1.  High resistance.  Yes the RC time constant in air attempting to
charge a
12pf sphere is long, but the ionized air resistance is efectively
lowered by
the charge carriersis.  So, what would have been yottaohms is just a
couple
of teraohms for RC time constant purposes of accumulating charge.  This
figures and is accepted as real.  Especially, since I verified the
charge
polarity on the Keithley with a purely mechanical electroscope.

2.  I truly believe, that I may not be measuring what I think I am
measuring!  One of the first maxims of good enginerering!  Good
measurement
this close to the "edge' and in the electrically panic striken and
stressed
environment of a running Tesla coil is no place for the wide eyed,
casual
interloper with a VOM.   However what is it?  It is easy to doubt a
measurement... another to pin down a causitibve agent or identifiy what
is
being measured.

However, if the negative, instant, voltage measured on the Keithley is
real,
what gives?

I feel I even now know the exact mechanism for the DC charging scenario
of
remote objects (slow charge) from the AC based Tesla system.  This last
item
(#2 above), still has me thinkin'

Ever perplexed...

Richard Hull, TCBOR