Terry, The vibrations of tuning fork tines travel down the stem through this sort of molecular, " chain reaction ", shock wave effect: compressing and releasing the atoms from compression ( elasticity ), and even when the exterior of the stem sides is supresed from vibrating by our holding it. This same shock wave travels from a tiny contact point on the ball at the end ( hardly large enough to move any mass of material, and not really coupled mechanically to anything it is just resting on )and these then spread out into ever wider waves until some portion of the material they are traveling through vibrates in sympathy with them, and agitates the air physically, resulting in another shock wave which our eardrums are agitated by, resulting in what we call "sound". Why is this notion so vehemently rejected, by so many ??? ( And please do excuse me if I am mistaken in considering you among them. ) The denser the medium ( more tightly packed molecules and atoms ) the more rapidly the shock wave travels, as less atomic material is freee to be "jangled" against itself, causing energy absorption through molecular friction, which is observed as "heat". Sound ( shock waves ) travel faster in water than air, for example, because the density of the water is greater. This is a basic fact of physics. No disrespect intended---your skills as a craftsman are utterly stunning and truly humbling---- but why should all of these basic facts of physics be refuted, when the piano is concerned ? Or am I misinterpreting this debate? Respectfully, Gordon P.S. Dear Sarah, I suspect that you can refine my definition, and kindly request that you do so. --- Terry <terry@farrellpiano.com> wrote: > Yes, but why do you think these concepts say anthing > about waves zooming > back and forth across a soundboard? > > What do you think of the statement from Steinway's > website? > > Terry Farrell > > > Hi Terry, > > > > This is standard wave theory. It applies to many > > things we see in nature, from antennas and > > electromagnetic radiation, to the propagation of > waves > > in water, to nuclear physics, and accoustics. > > Concpets such as impedance, mismatch and > reflection > > are routinely used in engineering. Standing waves > and > > resonances are just a manifestation of the basic > > principle that waves reflect when they encounter > an > > impedance mismatch. > > > > The "bass reflex" loudspeaker boxes work that way > and > > the same effect is exploited in sunglasses with a > UV > > filter. These are fundamental principles in > physics. > > > > Vladan > > > > Terry wrote: > > > > What do you base this on? Does anyone know the > origin > > of this kind of thinking? > > > _______________________________________________ > pianotech list info: > https://www.moypiano.com/resources/#archives > __________________________________ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250
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