Klarinet Archive - Posting 000267.txt from 1999/03

From: "Michael J. Lu" <MJL@-----.com>
Subj: RE: [kl] breaking glass
Date: Thu, 4 Mar 1999 19:39:54 -0500

> One of the students here at my school has decided to do a project on how
> sound breaks glass, dealing with the acoustics of it, etc.
>
> If anyone has any resources, information, articles, books, etc. that
> pertains to this topic please email me. It is really not clarinet
> related so off the list might be more appropriate.

Lunch meat is hardly appropriate, but at least this has to do with
sound...one aspect of the clarinet.

Anyway, the breaking of glass by sound involves sympathetic virations, sound
waves that make the glass resonate at a certain frequency. At a point, this
virbration gets to be perfectly in sync with the glass, and then the
viration shatters it, due to severely amplified sound waves. A similar thing
occurs when soldiers march across a bridge in step, which set up sympathetic
vibrations and colaspe the bridge.

Hope that helps, but nothing beats an encyclopedia article on sound!

-Michael J. Lu
MJL@-----.com
ICQ: 2380127 (Grinner)

===
"Don't suck...blow."
-Mike Snell, my band director.

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