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Subject:
Re: Breaking a glass with sound
From:
Mark Fowle <[log in to unmask]>
Reply To:
[log in to unmask]
Date:
Wed, 21 Oct 2009 10:49:45 -0700
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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.
*****************************************************************************

Susan,

I vaguely remember this as a Myth Busters segment.  So you might want to 
check to see if that episode is available on the web.

 -Mark-

 * Mark Fowle, Partner
 * SIGNAL-INNOVA
 * 2841 East 19th Street
 * Signal Hill, CA 90755
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Susan Timberlake wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
>
> I'd like to do a demonstration of breaking a glass with sound. All the
> instructions I've found on the web about how to do it involve
> equipment (or an operatically trained singer)  that I don't have, and
> I'm not sure if the equipment is even necessary. For example, the
> instructions here
> <http://www.physics.ucla.edu/demoweb/demomanual/acoustics/effects_of_sound/breaking_glass_with_sound.html>
> say that you need an oscilloscope, a frequency counter, a function
> generator, a frequency synthesizer, and a stereo amplifier in addition
> to a microphone and a speaker
>
> I would have thought that a computer with waveform visualization and
> tone generation software would be enough. Tap the glass, look at the
> wave form on the computer and find the peak frequency, and then use
> the tone gneration software to produce a tone of that frequency. Aim
> the computer speakers at the glass, and turn up the volume.
>
> Can anyone who has done this demonstration tell me what equipment they
> think is necessary?
>
> Thanks,
> Susan
> _____________________________
> Susan Timberlake
> Writer, editor, and content developer
> www.susantimberlake.com
>
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>
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-- 

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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.

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