Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site lanl-a.UUCP Path: utzoo!linus!philabs!seismo!harpo!floyd!cmcl2!lanl-a!jlg From: jlg@lanl-a.UUCP Newsgroups: net.physics Subject: Re: sudden freezing of soda when cover is removed Message-ID: <333@lanl-a.UUCP> Date: Wed, 4-Jan-84 15:07:30 EST Article-I.D.: lanl-a.333 Posted: Wed Jan 4 15:07:30 1984 Date-Received: Fri, 6-Jan-84 01:24:25 EST References: <15017@sri-arpa.UUCP> Organization: Los Alamos National Laboratory Lines: 11 I think that the freezing of soda mentioned is from adiabatic cooling when the bottle was opened. When the pressure on a substance is lowered suddenly (not enough time for heat to flow), the substance will cool off. If the soda was very near its freezing point when it was opened, this temperature drop would have been sufficient to start the freezing process. Most of the time when I have been unfortunate enough to leave a soda bottle in a cold place, it has frozen. Often breaking the bottle. It is my impression that supercooling a fluid is very difficult and can usually only be performaed under laboratory conditions.