> > From: PAULREVENKOJONES at aol.com > Date: August 29, 2009 12:51:56 AM EDT > To: pianotech at ptg.org > Subject: Re: [pianotech] PR follow up > Reply-To: pianotech at ptg.org > > > > > In a message dated 8/28/2009 11:34:47 P.M. Central Daylight Time, defaziomusic at verizon.net > writes: > Since PRJ is asserting that science shows that he is right and that > others are wrong, > Hysteresis reaches hysteria! How on earth did you get there? That's > a representation of my original question which has no basis in fact. > > P > Hi Paul, My apologies if I misrepresented your statements or opinions. As for "how I got there," the few posts below may answer that.... My post was not meant as an accusation, but rather as a question: Do you know of any scientific or engineering studies that show hysteresis in the elastic deformation of wood? If so, that is valuable information that would benefit the group, and would go a long way toward understanding instability in pitch raises. If not, since we generally stipulate to unequal string tensions in different segments leading to instability, then what is your understanding of any other way or ways in which the physics of the piano explains instability in pitch raises? Joe DeFazio Pittsburgh > > David: > > It is only tiresome when the physics of the piano are ignored and > there is an admixture of contradictory terms which result in > confusion, particularly for those who are new to this field. > > From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] > On Behalf Of PAULREVENKOJONES at aol.com > Sent: Friday, August 28, 2009 5:02 PM > To: pianotech at ptg.org > Subject: Re: [pianotech] PR follow up > > The most general phrases that seems appropriate to start the > discussion would be soundboard (de- and re-)compression over both > bridges, and the string segmentation tension differentials. Seems > enough. :-) > > Cheers, > > P > > In a message dated 8/28/2009 6:36:33 P.M. Central Daylight Time, davidlovepianos at comcast.net > writes: > Please explain the physics as you know it that would account for this. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090829/c98b2fde/attachment.htm>
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