[NewCandle] Measuring Half-Cell Charge

[Frederick Sparber]

Okay Nick.

It looks like the tenet that "it is impossible to measure half cell
potential without the
other half reference electrode".

IOW, one might hang a AA or D battery insted of the half cell and get some
favorable results.
Designs for a hollow interior can come later.  :-)

Fred

On 9/13/07, Nick Reiter <avalonbiker at yahoo.com> wrote:
> Hi Fred and Keith,
>
> Well, I ran some trials yesterday and today using the
> brass cup arrangement suspended between my parallel
> aluminum foil field plates.
>
> The distance between plates is 17cm or .17m.  I am
> able to apply a potential from 0 to 15kV to them,
> which I guess would equate to a maximum of about 88kV
> per meter field strength.  Should be plenty.
>
> The brass cup bob is about 3 inches across, and holds
> about 200ml of liquid.  It is suspended by 1 meter
> worth of ceramic thread. It is suspended as
> equidistant as I could get (perhaps within 2mm)
> between the plates, and centerd more or less with
> plate geometry.
>
> Location in my back lab, no air moving, 26C ambient
> temp. low humidity.  A glass rod pointer on the foil
> plate box back panel allowed me to gauge any movement
> within a millimeter or so of the cup.
>
> I had to allow the cup to stabilize overnight, and for
> all tensions in the thread to relax.
>
> With potential applied to the plates, from zero up to
> about 10kV, and the cup filled with deionized water, I
> see no net deflection toward either plate over 30
> seconds of time.
>
> I then added 5 grams of NaCl to the brass cup of water
> to introduce an ionic species.
>
> Again, no net movement or deflection detected from 0
> to 10kV field.
>
> I'll keep on it.  Any new ideas or thoughts?
>
> N
>
>
>      ____________________________________________________________________________________
> Tonight's top picks. What will you watch tonight? Preview the hottest shows on Yahoo! TV.
> http://tv.yahoo.com/
>
>
> _______________________________________________
> NewCandle mailing list
> NewCandle at ipdiscover.com
> http://ipdiscover.com/mailman/listinfo/newcandle_ipdiscover.com
>