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<DIV><FONT face=Arial size=2>That probably explains why I smell it so fast when
somone lights a match in the house.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>BTW, I don't think there is an "air molecule", it
is a gas mixture and it is packed rel tight on the bottom. Half of the
atmosphere is below 18,000 feet. </FONT></DIV>
<DIV> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=randy10926@comcast.net
href="mailto:randy10926@comcast.net">randy10926@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, August 15, 2005 5:22
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Why doesn't the sky
fall?</DIV>
<DIV><BR></DIV>
<DIV>Air molecules are never at rest. They undergo constant random thermal
motions of a variety of types. The simplest type is that of uniform
translation. The mean speed is about 500 m/s which is greater than the speed
of sound (340 m/s). </DIV>
<DIV> </DIV>
<DIV>Randy</DIV>
<DIV> </DIV>
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<DIV><FONT face=Arial size=2>I thought it was time to stir the pot
while we wait for the results from the Worlds.</FONT></DIV>
<DIV><FONT face=Arial size=2>Can anyone explain why gravity doesn't pull all
the air molecules down to earth? Are they lighter than space?
What is their mean speed?</FONT></DIV>
<DIV><FONT face=Arial size=2>I don't think this will help answer the
weathervaning question and won't help us fly any better but I thought it
might be fun.</FONT></DIV>
<DIV><FONT face=Arial size=2>Jim
O</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>