Re: [Phys-l] Resonant frequency

[Ken Fox <physicsfox23@gmail.com>]

Thank you. These are useful leads.

Ken Fox

On Sat, Sep 26, 2009 at 10:53 AM, John Denker <jsd@av8n.com> wrote:

> iOn 09/26/09 05:46, Ken Fox wrote:
> > A student at my high school is looking for a resource on the resonant
> > frequency of a glass, or a beaker, and the effect of adding water. This
> is a
> > Physics project and a capable student. Can anyone point us to a good
> > resource. Much appreciated.
>
> It rings like a bell.
>
>  http://www.google.com/search?q=%22physics+of+bells
>  http://www.google.com/search?q=%22sound+of+bells
>
> which lead to
>
>  http://www.ling.upenn.edu/~kingsbur/acoustics.html<http://www.ling.upenn.edu/%7Ekingsbur/acoustics.html>
>  http://www.hibberts.co.uk/
>  http://www.btinternet.com/~keltek/sapage1.html<http://www.btinternet.com/%7Ekeltek/sapage1.html>
>
> and tons of others.
>
> If you want really hard-core physics info, throw some
> physics buzzwords into the search:
>
>  http://www.google.com/search?q=%2Bbells+young%27s+modulus
>  http://www.google.com/search?q=%2Bbells+quadrupole+vibration
>
> ====
>
> If by any chance you are interested in the resonance of
> the _air_ inside the vessel (as opposed to the deflection
> of the solid walls of the vessel) that is much simpler.
> Treat it as  a Helmholtz resonator.  A good reference is
> the book _On the Sensations of Tone_ by some guy named
> Helmholtz.  It's readily available as a Dover reprint.
>
> http://physics.kenyon.edu/EarlyApparatus/Rudolf_Koenig_Apparatus/Helmholtz_Resonator/Helmholtz_Resonator.html
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