hello! experience with 802.11x and extreme humidity?

Martijn van Oosterhout kleptog at svana.org
Mon Oct 14 14:32:43 EST 2002


On Mon, Oct 14, 2002 at 03:25:30AM +0100, 'Timothy Murphy' wrote:
> On Mon, Oct 14, 2002 at 10:18:35AM +1000, Darryl Smith wrote:
>  
> > It gives a few references on absorbtion of water at varieous
> > frequencies, and notes that microwave ovens do not work by exciting
> > water molecules, but by twisting both the dipoles in a water atom
> > increasing its kinetic energy.
> 
> If 2.4GHz radiation does that to water in a microwave,
> won't it do it to water in the air too?

Actually, someone on slashdot posted a really good link about this. It does
indeed work by twisting the dipoles, but air being what it is, they just
flip back and re-emit the microwave, thus changing nothing.

However, in liquid water the twisting rubs against neighbouring molecules
releasing energy as heat, thus preventing it from being re-emitted as
microwaves.

Thus microwaves heat liquid water really well but ignore the gaseous form
almost entirely.
-- 
Martijn van Oosterhout   <kleptog at svana.org>   http://svana.org/kleptog/
> There are 10 kinds of people in the world, those that can do binary
> arithmetic and those that can't.



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