Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: notesfiles - hp internal release 1.2; site hplabs.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!bellcore!decvax!ittvax!dcdwest!sdcsvax!sdcrdcf!hplabs!iles From: iles@hplabs.UUCP Newsgroups: net.physics Subject: Why your car exhaust is whiteish Message-ID: <18600004@hplabs.UUCP> Date: Fri, 4-Jan-85 23:26:00 EST Article-I.D.: hplabs.18600004 Posted: Fri Jan 4 23:26:00 1985 Date-Received: Mon, 7-Jan-85 02:46:49 EST Lines: 10 Nf-ID: #N:hplabs:18600004:000:357 Nf-From: hplabs!iles Jan 4 20:26:00 1985 Car exhaust is visible because there is condensed water inside the tailpipe and catalytic converter and until this water is expelled, it appears in the exhaust as vapor/steam/water. I think this is true. It certainly seems plausible. Rafi Esrael (reply to Dan Lieman, at iles@venus, or anywhere at UC Berkeley Berknet, it will get to me eventually).