Re: Temperature

["Steve" <Steve-at-xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

The use of nitrates and other salts in depressing freezing point is well
known. Somewhere I have a table on this, probably at work. But I do remember
that water saturated with NaCl freezes at about minus 20 deg C. It's the
reason salt is used to clear ice.
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, November 10, 2000 7:16 PM
Subject: Re: Temperature


> Original poster: "Metlicka Marc" <mystuffs-at-orwell-dot-net>
>
>
>
> Tesla list wrote:
>
> > Original poster: "davep" <davep-at-quik-dot-com>
> >
> > another aspect to temperature, in certain climes:
> >
> >         If a ground system, to Real Ground has been found useful
> >         AND
> >         IF the local ground is subject to freezing
> >
> >         Frozen Water is Goodish insulator.  This was discussed 'here'
> >         some years back and turns out to be a known effect in power
> >         system grounding.  Basically, the ground gets 'worse'.
> >
> >         best
> >         dwp
>
> dave,
> this is absolutely correct. in "laying out" the power of a local medical
> facility, this point was brought up.
> it was explained to me by a EE and from what i gathered from the ,over my
> head, overly complicated, boy am i confused now, explanation, i took it
> to boil down to contact area of the ground particles? if the earth is
> frozen, the ice crystals don't contact each other in a "smooth" form as
> if there is a liquid water bond?
> this is were i learned about using tree fertilizer spikes around ground
> rods, it seems the nitrates not only add to the conductivity, but help
> when frozen some how?
> i had completely forgotten about this until you mentioned it, thank you.
> marc
>
>
>
>