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Posted to rec.food.cooking
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Boiling water question
"Kalmia" > wrote in message
...
> On Jun 24, 9:32 am, Cindy Hamilton >
> wrote:
>> On Jun 23, 7:14 pm, Kalmia > wrote:
>>
>> > I have heard that cold water will come to a boil quicker than warm
>> > water. Not having identical pots and burners, I am at a lost to test
>> > this. Any truth to this, and if so, why?
>>
>> Try out this thought experiment:
>>
>> You have two identical pots, two identical burners, and two
>> identical quantities of water.
>>
>> One of the pots of water is at 40 F, pretty far from boiling.
>> The other pot is at 210 F, almost ready to boil.
>>
>> Apply heat from your two identical burners. Which
>> pot do you think will boil first?
>>
>> If the two pots of water are at 70 and 120 F, the
>> difference in boiling times will be smaller, but
>> I'd still expect the one starting at 120 F to boil
>> first.
>>
>> As to the "does a covered pot boil quicker", that is
>> an experiment you can readily conduct at home
>> with one pot and one burner. You'll have to make
>> sure the initial conditions are the same for each
>> run, but with a little patience that's feasible.
>>
>> Cindy Hamilton
>
> I guess with a stopwatch, I could run a very weak experiment. Hey -
> I heard this from a guy half in the bag at a bar - so I had my
> doubts. He sure didn't look like the scientific type.
<g>
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