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Path: utzoo!decvax!ittvax!sii!dmcnh!gts
From: gts@dmcnh.UUCP
Newsgroups: net.physics
Subject: Visible automobile exhaust on a cold day
Message-ID: <174@dmcnh.UUCP>
Date: Fri, 28-Dec-84 15:24:21 EST
Article-I.D.: dmcnh.174
Posted: Fri Dec 28 15:24:21 1984
Date-Received: Fri, 28-Dec-84 20:25:38 EST
Distribution: net
Organization: Datamedia Corp, Nashua, NH
Lines: 13

[posted to net.cooks.line-eaters]

Can anyone out there tell me why a car has visible exhaust while warming
up on a cold day; then as the car warms up, it becomes invisible.  It is
possible to tell how long a car has been driving by noticing how much of
its exhaust is visible.  Why is this?
Thanks in advance.
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