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I too do the experiment with lycopodium powder. It rocks. Works well by
attaching the tube/funnel to a ring stand, then taping a candle to the
ringstand rod. A couple of notes:

This experiment can produce a fair amount of smoke, so don't do it close
to a smoke detector.

The paint can apparatus which Scott describes, below, is available from
Flinn Scientific. He's right about not doing it too close to the
audience, and a safety shield is probably a good idea, too.

Jonah Cohen
Outreach & Public Programs Manager
Science Center of Connecticut

On Fri, 16 Jan 2004 09:38:30 -0800 scott randol <[log in to unmask]>
writes:
>For a real show stopper, we followed  this demo
> up by putting the whole set-up inside a paint bucket, sealing the
> lid and letting it do its thing.  The effect is similar to the old
flour
> silos that would explode; the lid blows off with a huge 'bang' and a
flash of
> flame. We had to tie the lid down so that it did not fly into the
crowd.
>
> Scott Randol
> BlueCrowConsulting.com


"Too many whites are getting away with drug use.
The answer is to... find the ones who are getting away with it, convict
them,
and send them up the river."
      -Rush Limbaugh


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