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

[Jack Uretsky <jlu@hep.anl.gov>]

Yes, it exposes the princpal principle nicely, and, I think, makes the 
students go home and think.  The phrase starting with "no matter.." may 
cause some difficulty.  The statement is true, of course, provided that 
the speed of sound is constant through the medium. If it is not, pulses 
folloing different paths may interfere, as is often the case in real life- 
which confounds the intuition.
				Regards,
					Jack


On Sat, 4 Apr 2009, curtis osterhoudt wrote:

> I very much like Brian's explanation, below:
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> Dressing this argument up for dramatic effect might have one tapping on
> a flexible diaphragm at one pulse per second. If there is water on the
> far side, it would feel one pulse per second too, no matter at what
> speed that pulse is transmitted.
> ( A concrete example is SO helpful, always....)
>
> Brian W
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> _______________________________________________
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