<HTML>Didn't someone at some time in the past do an experiment with a piece of wire with a heavy weight attached to it. He hung the wire for the ceiling, and measured the length of it over a period of time. I can't remember too many details, but I thought I read something about it once, maybe in a Journal. Will any of you with a CD do a search along those lines? Wim Maybe I'll spend some time tonight going through all my old Journals. It's time to dust those shelves anyway. :) In a message dated 4/5/02 10:25:25 PM !!!First Boot!!!, jonpage@attbi.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">On the Mechanical Music Digest there are few people who insist that piano wire does not stretch and this is not the reason for multiple tunings required for a newly strung piano.  But once the wire has been coaxed to definite terminations, why else would it go flat over the ensuing days. They refer to: 'Hooke's Law'  and 'Young's modulus for piano wire'. One guy even flames the PTG as to not knowing as much as he does with "their accepted belief that piano wire stretches". I didn't respond beyond my initial statement of wire stretching, wire easing through the friction at bearing points, plate compression and case deformation because of the intensity of a zealous tirade but would like to hear opinions on the matter. % jon Page </BLOCKQUOTE> </HTML>