Date: Tue, 05 Nov 2002 13:51:58 -0500

Author: Sam Sampere

Subject: Re: Flame tube

Post:

You can do this with cork dust or small styrofoam spheres. You see the
particles bounce around. I'd say the dust and air are two immiscible
fluids. For fun, go the the Bose outlet nearest you and check out their
variation of this Kuntz tube. It's pretty cool.

Sam

Kent Fisher wrote:

> I'm interested in building a flame tube -- basically a large "gas grill"
> with a speaker in one end that shows standing waves by the corresponding
> heights of the flames. I have a student who has the know-how to build
> one, but we'd appreciate any information & advice -- or, best of all,
> some plans! In particular, we're wondering whether anyone knows anything
> about choosing the hole spacing and diameter.
>
> As a related demonstration, my student was suggesting that, instead of
> putting gas in the tube and burning it, we might put two immisicble
> liquids with different densities in a clear plastic tube and see whether
> the periodic density gradient produced by standing waves would result in
> a visible pattern. Does anyone know if this has been tried before?
>
> Regards,
>
> Kent Fisher
> Columbus State Community College
> Biological & Physical Sciences
> 482 Nestor Hall
> (614) 287-2515

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