<!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 6.00.2800.1555" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #ffffff" bgColor=#ffffff> <DIV>Hi,</DIV> <DIV>It is like the difference of having a elephant stand on your arm or a mosquito. One you can really feel. <g></DIV> <DIV>Joe Goss RPT<BR>Mother Goose Tools<BR><A href="mailto:imatunr@srvinet.com">imatunr@srvinet.com</A><BR><A href="http://www.mothergoosetools.com">www.mothergoosetools.com</A></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=mfarrel2@tampabay.rr.com href="mailto:mfarrel2@tampabay.rr.com">Farrell</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, January 25, 2008 8:50 AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Sound waves move air?</DIV> <DIV><BR></DIV> <DIV><FONT size=3>Yes - the amplitude of sound waves is very small compared to when you feel wind. You feel wind moving on the scale of air molecules moving inches and feet. I don't know what the amplitude of frequencies are, but you can get an idea by looking at the soundboard of a piano - it is moving a similar amplitude as the air - so small you can't really see it.</FONT></DIV> <DIV><FONT size=3></FONT> </DIV> <DIV>"why can't you <EM><U>feel</U></EM> sound waves moving past your ear? ...(or <EM><U>can</U></EM> you feel them if the sound is loud enough?"</DIV> <DIV> </DIV> <DIV><FONT size=3>Yes, you can - if the sound wave is high enough amplitude AND low enough frequency (long sound wave). Ever sit in your car at a stoplight next to a "gangsta-rapping, mega-watt, full-volume"-equipped car? Or perhaps you are in the habit of listening to Dr. Dre and Snoop Dogg at full volume from you 8,000 Watt six-15-inch subwoofers stereo? Anyway, you can feel the pressure (sound) waves on your body. Sit in one of those cars and you can even watch your hair move (but watch out for flying glass!)!</FONT></DIV> <DIV><FONT size=3></FONT> </DIV> <DIV><FONT size=3>But most sound waves cause very tiny movements of air molecules and you just can't feel them on your skin - that is why your eardrum is SOOOOOO sensitive - so that IT CAN "feel" the air movements.</FONT></DIV> <DIV><FONT size=3></FONT> </DIV> <DIV><FONT size=3>That make sense? Hope this helps. Oh, and, I hope I have made correct factual statements...... ;-)</FONT></DIV> <DIV><FONT size=3></FONT> </DIV> <DIV><FONT size=3>Terry Farrell</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=KeyKat88@aol.com href="mailto:KeyKat88@aol.com">KeyKat88@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> Friday, January 25, 2008 10:32 AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Sound waves move air?</DIV> <DIV><BR></DIV> <DIV>Greetings,</DIV> <DIV> </DIV> <DIV>        Soundwaves <EM><U>Do</U></EM> move air then, but on a much smaller level, Is that right?</DIV> <DIV> </DIV> <DIV>Julia Gottshall</DIV> <DIV>Readding, PA</DIV><BR><BR><BR> <DIV><FONT style="FONT: 10pt ARIAL, SAN-SERIF; COLOR: black"> <HR style="MARGIN-TOP: 10px"> Who's never won? <A title=http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp00300000002548 href="http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp00300000002548" target=_blank>Biggest Grammy Award surprises of all time on AOL Music.</A></FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>