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Re: Better bottle caps
Hi all
In a recent PBS program, don't recall the title, there was a story
about why the Hindenburg really burned up. It seems the fabric
covering the outside was doped with a mixture of powdered aluminum and
iron oxide. In the same proportions used to fuel the solid fuel
boosters on the space shuttle. The fire started by guess what...a
static spark. I think more info can be had at www.pbs-dot-org .
At any rate,
Suppose someone were able to coat the inside and outside of glass
bottles with some durable, conductive, nonflammable coating. Glass is
still a lossy dielectric and will generate heat at TC frequencies. If
the bottles were filled with water, and immersed in water, the water
could help a lot to keep the glass cool. Remove the water and you have
lost your coolant thus lowering your power levels, probably
considerably. (I figure that the metallic coating would also be
reflective helping the heat to stay trapped in the glass)
Bottom line, you can't get something for nothing. Everything is a
trade off.
just MY $.02
later
deano
> > If you mix aluminium powder with something inflammable like
> >varnish...... isn't that getting towards rocket booster fuel ?
> > Richard.
>
> Heh ;)
> In my understanding, it's the solvent that's flammable, not the
residual
> leftover coating. Of course this *could* be why all the old plans
caled for
> shellack. Shellack is in alcohol, but after the alcohol evaporates,
there's
> no danger of ignition. I'd use polyurethane or epoxy thinned with
acetone.
> And I'd use so much powder that the carrier would be in so little
amount
> that it would have no other purpose than to bind the aluminum
particles
> together. It would look like aluminum syrup ;) And it's not like
you'd have
> to worry about flammability issues after the solvent is gone. The
area
> should be well-ventilated, and the usual safeguards should be used
as when
> using anything flammable. But after the coating is "dry", I don't
think
> there's any danger.
> If I'm wrong, I need to know about it though ;)
> Dan Kline
> ntesla-at-ntesla.csd.sc.edu
>
>