<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1106" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV> <DIV><STRONG><FONT face=Arial>Bob Davis wrote;</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial></FONT></STRONG> </DIV> <DIV><STRONG><FONT face=Arial></FONT></STRONG> </DIV> <DIV>"The 5th partial of ~F3~ on the other hand, is ~A5~, which matches = the desired A4 at its SECOND partial, A5 [a 5:2 match]. The A5 = produced by the fork is harmonic, but that produced by the piano is a little sharp. = Matching this coincidence causes the piano's A4 to be slightly flat. F4-A4 [a 5:4 = match, coincident at A6] would produce an even flatter A4, with equal beats = between the fork and piano............."</DIV> <DIV> </DIV> <DIV><STRONG><FONT face=Arial>I was not aware that tuning forks were = supposed to have partials or harmonics. Aren't they supposed to have pure tones?</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial></FONT></STRONG> </DIV> <DIV><STRONG><FONT = face=Arial>AF</FONT></STRONG></DIV></DIV></BODY></HTML>