Re: pinhole Determination of wavelength

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From: Paul Doherty (pauld@exploratorium.edu)
Date: Thu Feb 10 2005 - 16:05:22 PST 

Message-Id: <l03110776be31a6dd0215@[192.168.112.4]>
Date: Thu, 10 Feb 2005 16:05:22 -0800
From: Paul Doherty <pauld@exploratorium.edu>
Subject: Re: pinhole Determination of wavelength

Add 0.61 times the radius of the pipe for each open end.

so a pipe of length L and radius r open at both ends has the resonance of a
theoretical pipe L +1.2 *r long

and one open at one end has a resonance of a theoretical pipe L + 0.61r long

Paul D

>Hello,
>
>I am looking for a way to calculate the wavelength of a sound wave
>produced in a tube. In one of the Snackbooks, there is a suggested way to
>calculate this, but I am not sure how to correct for the diameter of the
>tube.
>
>Thank you, and take good care.
>
>Joe
>
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