Re: [Phys-l] frequency and wavelength of sound in air

[ludwik kowalski <kowalskil@mail.montclair.edu>]

On Apr 4, 2009, at 8:56 PM, Julie Quah wrote:

> Just wondering, if the speed of sound in water is higher than that  
> in air,
> Which of  its, frequency or wavelength, (or both) increases in water?

A "gedanken demo" that comes to my mind is a standing wave in water  
(or another liquid) with suspended particles. The known frequency is  
changed and lambda is measured (observing suspended particles).

Can a one-dimensional standing wave be established in a narrow water  
channel? If so then the (lambda*f=const) could be tested  
experimentally for visible ways.

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Ludwik Kowalski, a retired physics teacher and an amateur journalist.  
Updated links  to publications and reviews are at:

http://csam.montclair.edu/~kowalski/cf/   http://csam.montclair.edu/~kowalski/my_opeds.html 
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