Michael, your physicist friend didn't understand the problem. As Bob described it the amount of beer in the bottle during the experiment was fixed. Only the size of the opening changed.
Michael Thames wrote: > I've just spoken to my physicist friend, and he explained it like this. > When you have a beer bottle and blow into it, the pitch changes according > to how much beer ( air volume) is in the bottle. > Bob, what has the most significant effect on the pitch is how much beer > you consumed during your experiment! > Michael Thames > Luthier > www.ThamesClassicalGuitars.com > Site design by Natalina Calia-Thames > ----- Original Message ----- > From: "BobClair or EkkoJennings" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, December 11, 2003 8:48 AM > Subject: a rosette by any other name... > > >> >> Philippe Mottet <[EMAIL PROTECTED]> writes: >> >> > I think M. Thames is right when he mentions that a bigger opening, a >> > rosette with a longer diameter and an airy (?) motive, tends to favor > bass >> > and fundamental resonances. >> >> And you, also, would be incorrect. I'm not trying to be mean or rude, >> you > are entitled to >> believe whatever makes you happy. But unlike some more subjective >> things, > like whether a >> note is "sparkling" or not, the pitch of the main air resonance of a > guitar or lute or violin >> and what happens to that pitch as you make the hole(s) in the top >> smaller > (it goes down) are objective >> things that you can easily measure with a simple experiment. They are no > more influenced by how you think >> or feel about them than is the height of the Eiffel tower. >> >> As for "this particular rose design causes those particular tonal > qualities" - there are just way too many >> variables involved. Making such a statement on the basis of one or two > instruments is nothing more >> than a superstition. To make any meaningful statement you would have to > make two batches of otherwise >> identical instruments with twodifferent rose patterns and then show >> that, > on average, a pair with different >> roses had a significant difference in the quality you were testing for > compared to a pair with the same rose design. >> At this point it would be wise to recall a statement attributed to >> Michael > Lowe: "An exact copy of a historical instrument ? >> I can't even make an exact copy of one of my own instruments." >> >> Pendulums ? Divining ? Dowsing? Mysterious Energy ? My contract with the > Physicist's Union has a clause limiting >> the amount of time I have to spend arguing with believers so I will just > leave with a single >> word: "unlikely". >> >> >> .....Bob >> >> ____________________________________________________________ >> ____________________________________________________________ >> >> Replies: (remove the "ZZZZ") >> >> Ekko Jennings: [EMAIL PROTECTED] >> Bob Clair: [EMAIL PROTECTED] >> >> > > > > -- Rough-edged songs from a dark place in the soul: http://DoctorOakroot.com
