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Date: | Fri, 2 Feb 2007 14:38:44 -0600 |
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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There's not much to it: a piece of schedule 40 pipe, a way to hold
it over a flame (ring stand with a heavy base and a clamp that can
get hot), and the flame. You can also use a piece of 4" stove pipe.
If you have a copy of Let's Try It, it's called the Hoot Tube. I've
seen them made with bits of screen wire poked in the lower end, but I
don't believe it's necessary. I used to work in the
high-temperature furnace field, and the "acoustic load" on
large-diameter, heated ceramic tubes is quite large--they can tear
themselves apart with the heat-induced vibrations.
We tried touring it with the Traveling Experiment Gallery (hi Jonah)
using a propane torch, but it was hard to ship the propane cylinder
and it seemed a bit hazardous with the general public. Cheers from
frozen Minnesota, Jane
>I'm looking into some demos on sound, and unsurprisingly was intrigued
>by the Ruben's Tube, a contraption hat displays sound waves using fire,
>as seen in this video:
>
>http://www.youtube.com/watch?v=UR8rZMKlIq4
>
>A quick google check reveals many similar videos, but little info. Does
>anyone have any schematics for building one, tips for usage/safety/how
>it works? We're hoping to build a version portable enough for outreach.
>
>Thanks.
>Jonah Cohen
>Outreach & Public Programs Manager
>The Children's Museum
>
>"On blind faith they place reliance,
>what we need more of is science"
>
> -MC Hawking
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