Hello Mike,

On Wed, 13 Jan 1999, Mike Morrin wrote:

> At 10:30 pm 1/12/99 +0000, Peter L. Peres wrote:
> >Hello,
> >
> >  I know that this method seems funny (and Alice needled me) so I'm
> >looking at the various problems: Turns out that no-one ever heard of pipe
> >organs de-tuning themselves, that the resonant frequency is linearly
> >proportional with the column height (strictly linearly)
>
> No, it is the resonant wavelength that is directly proportional to length
> (does the frquency get bigger or smaller when the length gets bigger?).

Right. The length is inversely proportional with the frequency.

> The relationship between wavelength and frequency does IIRC depend on
> atmospheric pressure.

Yes but musicians who play organs don't care about 'lows' and 'highs' on
the barometer and they have the equipment to hear 2 Hz differences and
much less sometimes.

Peter