<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.19400"> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2 face=Arial>Marshall and others.</FONT></DIV> <DIV><FONT size=2 face=Arial></FONT> </DIV> <DIV><FONT size=2 face=Arial>I thought when I tuned all those concert pianos that when they turned the lights on it, the plate and strings expanded and the instrument went flat?</FONT></DIV> <DIV><FONT size=2 face=Arial></FONT> </DIV> <DIV><FONT size=2 face=Arial>William</FONT></DIV> <DIV><FONT size=2 face=Arial></FONT> </DIV> <DIV><FONT size=2 face=Arial></FONT> </DIV> <DIV><FONT size=2 face=Arial></FONT> </DIV> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px" dir=ltr> <DIV style="FONT: 10pt arial">---- Original Message ----- </DIV> <DIV style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A title=tnrwim@aol.com href="mailto:tnrwim@aol.com">tnrwim@aol.com</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, February 24, 2013 8:47 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [pianotech] pitch of a piano</DIV> <DIV><BR></DIV><FONT color=black size=2 face="Arial, Helvetica, sans-serif"> <DIV><FONT style="BACKGROUND-COLOR: transparent" face="Arial, Helvetica, sans-serif">Yes, Marshall, the pitch of a piano does go sharp when the temperature rises, or goes flat when the temperature drops. You understand, of course, only if the temperature in the room in which the piano is goes up or down. The pitch also goes up or down depending on the humidity level in the room. </FONT></DIV> <DIV> </DIV> <DIV>Isn't this something sort of basic that your learned in school? So why do you ask?</DIV> <DIV> </DIV> <DIV>Wim</DIV> <DIV></DIV> <DIV style="CLEAR: both"> <DIV> </DIV></DIV> <DIV></DIV> <DIV></DIV> <DIV style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">-----Original Message-----<BR>From: Marshall Gisondi <pianotune05@hotmail.com><BR>To: pianotech <pianotech@ptg.org><BR>Sent: Sun, Feb 24, 2013 3:28 pm<BR>Subject: [pianotech] pitch of a piano<BR><BR> <DIV id=AOLMsgPart_1_4ec83ec4-445d-4450-a8e7-530a39f6b330> <DIV dir=ltr><FONT size=3 face=Arial>Hi Everyone,</FONT><BR><FONT size=3 face=Arial>I thought the pitch of a piano rises when the temp rises or goes sharp and when it's cold goes flat?  </FONT><BR><FONT size=3 face=Arial>Marshall<BR id=ecxFontBreak></FONT><BR><BR><EM><FONT size=3 face=Arial>Marshall Gisondi</FONT></EM><BR><EM><FONT size=3 face=Arial>MARSHALL'S PIANO SERVICE</FONT></EM><BR><EM><FONT size=3 face=Arial>215-510-9400</FONT></EM><BR><EM><FONT size=3 face=Arial><A href="http://www.phillytuner.com" target=_blank>http://www.phillytuner.com</A> </FONT></EM><BR><BR></DIV></DIV></DIV></BLOCKQUOTE></FONT></BODY></HTML>