OrionWorks wrote:
> > Ah, yes. A pocket warmer, like the kind people use at
> > a football game. They sell chemical heaters like that
> > in Japan.
>
> They sell them here in the U.S. as well. They are quite effective.
Oops! I misunderstood you.
You mean chemical heaters for a room I presume, not hand warmers.
I mean hand warmers. "Disposable chemical pocket warmers." Little plastic
bags full of chemicals, mostly iron filings, I think. You smoosh or bend
the bag to mix the chemicals, and it gets hot for several hours. I guess it
puts out a couple of watts. I am trying to think of what they are called .
. . Ah, "kairo." See:
http://www.scienceiq.com/ShowFact.cfm?ID=212
http://www.sportstek.net/hotteeze.htm
Apparently you have to admit air into the bag. It would be interesting to
see what would happen if a whole box of these things was damaged.
I have not seen these in the U.S.
- Jed
