[pianotech] pitch of a piano

[Piano Boutique]

Marshall and others.

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?

William



  ---- Original Message ----- 
  From: tnrwim at aol.com 
  To: pianotech at ptg.org 
  Sent: Sunday, February 24, 2013 8:47 PM
  Subject: Re: [pianotech] pitch of a piano


  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. 

  Isn't this something sort of basic that your learned in school? So why do you ask?

  Wim

  -----Original Message-----
  From: Marshall Gisondi <pianotune05 at hotmail.com>
  To: pianotech <pianotech at ptg.org>
  Sent: Sun, Feb 24, 2013 3:28 pm
  Subject: [pianotech] pitch of a piano


  Hi Everyone,
  I thought the pitch of a piano rises when the temp rises or goes sharp and when it's cold goes flat?  
  Marshall


  Marshall Gisondi
  MARSHALL'S PIANO SERVICE
  215-510-9400
  http://www.phillytuner.com 

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