Correct me if I'm wrong, but as I understand it, as steam cools, it
condenses and forms liquid water, though that liquid may be in the form of
vapor, or humidity.  Seems that there must be a difference between humidity
(say, fog) and steam.  Or am I all wet?

Karl Wolz

|-----Original Message-----
|From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
|David Beierl
|Sent: Monday, August 30, 2010 1:39 PM
|To: vanagon@GERRY.VANAGON.COM
|Subject: Re: Was: question: Sorry, but ...
|
|At 08:19 AM 8/30/2010  -0700, Don Hanson wrote:
|>  Water vapor (humidity) is present in atmosphere. Water boils, changing
|into
|>steam at 212f.  As the water vapor inside a tire turns into steam (race
|tire
|>inside temps regularly exceed 212f)  it expands dramatically.  You know,
|>like a steam engine?
|
|Don, water vapor *is* steam, or vise versa.  Since there's no phase
|change you don't get any extra expansion beyond the normal expansion
|of water vapor as it gets hotter.  If you're starting with liquid
|water that's a different story.
|
|Yours,
|David