From: "John Beamish" 

Hey, I'm in geezer-city (as you should well know by now ;-) ) and that
means I forget the start of the post by the time I get to ... what was I
saying?

On Mon, 19 Feb 2007 19:21:39 -0500, Don Hills
 wrote:

> In article
> ,
> "John Beamish"  wrote:
>> IIRC from my grade 10 physics/chem class:  change of state of matter
>> from
>> gas-to-liquid or liquid-to-solid or the return route involves
>> substantial
>> energy transfer.  Once the change of state occurs, the energy involved
>> in
>> further transitions within the state is demonstrably less.
>
> Indeed, as the figures in my post illustrated.  Two thirds of the
> energy
> used to get water from +20C to -20C is used to get it through the 0C
> phase
> change.
>

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