Re: Distilled water as a dielectric?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Greg Morris <gbmorris@xxxxxxxxx>

Alright, thanks guys, that's exactly what I wanted to know. Any suggestions 
on what I should use for a dielectric, that would be cheap, easily obtained 
and work well? How big do parallel plate caps usually have to be anyway? 
Has anyone here made any?

On 5/31/05, Tesla list <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx> wrote:
> Original poster: dave pierson <<mailto:davep@xxxxxxxx>davep@xxxxxxxx>
>
>
>
> >The problem is that it is hard to make deionised water stay
> >deionised.  Once you put ordinary metal contacts in the water and pass a
> >current you start to get ions.  There are dissolved gases such as CO2 that
> >dissociate into H+ and HCO3- that can combine with metals.
> >In some casual HV experiments with deionised water open to the air the
> >conductivity increased over a day or two.
>
>     Just so.
>     I've mentioned visiting the HVDC power inverter: they chop MW of 
> +/-500KVDC
>     back to AC for the net (including some of what i use to send
> this....).  The
>     main insulator/cooler  is 99.999ifergethowmany9s water.  The
> purifier/deionizer runs
>     constantly stripping the stray ions back out...
>
>     best
>        dwp