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Re: Metric system



> >    In metric, 1 ml of water at 0 deg C is 1 gm; it is normalized (by
> >definition) in metric
>
>
> Over here in Massachusetts, it's hard to
> find water at 0 deg C.  'Round here we call
> it "ice."

Sorry to be a physicist (anal?!) about this :-)  :-), but of course there is
such a thing as water at 0 deg C.   The thing we call "ice"  produced in the
following way:

1. Cool the water to *exactly* 0 deg C

2. The water cannot be cooled further without removal of latent heat of
fusion (something like 80 kcal/g).

3. Once the latent heat of fusion is removed, you have "ice" at 0 deg C.
This can then be cooled further, to a temp below 0 deg C.

Simply:  putting water in an environment with temp < 0 deg C results in  the
water cooling to 0 deg C, some time passing while the temperature remains at
exactly 0 deg C, while the latent heat of fusion is removed (that is, ice is
being formed), then further cooling of the solid ice.

Don Feinberg
donf@cybernex.net

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