On 2008-06-15 20:52 +0100, Roedy Green allegedly wrote:
> On Sun, 08 Jun 2008 14:18:30 +0200, Daniele Futtorovic
> <da.futt.news@[EMAIL PROTECTED]
> wrote, quoted or indirectly quoted
> someone who said :
>
>> ot high enough to heat anything,
>
> That is a very unscientific statement.
>
> Please show your physics before you patronisingly spit at me for even
> considering the problem. Obviously, the size of the object heated is
> of considerable im****tance. A shorted dry cell gets plenty hot.
>
> To pop a single kernel of corn would take considerably less than the
> amount of energy needed to convert an equal volume of water to steam.
>
> I don't think you can't categorically dismiss the question without a
> little back of the envelope math. In any case, I get really really
> annoyed with folks who try to squash curiosity in others. There is
> nothing wrong with asking questions even when the answers (including
> the wrong answers) are "obvious" to some.
>
> I hope you don't have any kids.
Take it easy, Reody. It didn't mean to spit at you. The example you gave
seemed absurd to me, and I might have given vent to that feeling. If
that annoyed you, I'm sorry, but that's how it is.
I won't give you any maths on this. I don't have them. Deus macchina
proposed some, I don't know what they're worth, but they seem to agree
with me. I think I only applied some common sense. Now, of course common
sense is sometimes wrong, I'd be the first to admit that. But for me and
for this issue, it's sufficient. If you're not satisfied with that --
hey, inquire and experiment to your heart's content. Neither would I
spit at you nor think lowly of you if you did.
> As a ballpark, I will guess you need to va****ise a milligram of water
> to pop a kernel.
>
> The latent heat of va****isation is 2260 joules per gram.
>
> So I would need roughly 2 joules to pop one kernel.
>
> A joule is a watt-second.
>
> You can get 3 watt cell phone boosters, but most cell phones are about
> 1 watt according to
> http://electronics.howstuffworks.com/cell-phone-radiation1.htm
>
> If you put three of them together you would have available 3 watts.
>
> Presuming all the power went into the heating the kernel,
Note that this is a huge, and utterly unlikely assumption. Just my two
cents.
> I should be able to pop a kernel within a second.
>
> So I think an experiment is in order to see if this is a hoax, after
> you check my arithmetic of course.
Yada yada. Gomen.
--
DF.
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