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Path: utzoo!linus!decvax!harpo!eagle!mhuxt!mhuxi!mhuxa!houxm!ihnp4!ixn5c!jlgray
From: jlgray@ixn5c.UUCP
Newsgroups: net.misc
Subject: Re: boiling hot water
Message-ID: <679@ixn5c.UUCP>
Date: Tue, 16-Aug-83 15:20:32 EDT
Article-I.D.: ixn5c.679
Posted: Tue Aug 16 15:20:32 1983
Date-Received: Wed, 17-Aug-83 00:18:17 EDT
References: <434@ihuxm.UUCP>, <2869@decwrl.UUCP>
Organization: BTL Naperville, Il.
Lines: 15


One possible reason that hot water might "freeze" faster than cold water is
that under the proper conditions they may differ in their transision through
the "supercooled" state. Water that has been boiled for a time may have
a higher density of impurities (particulate matter) which can cause ice
crystals to form immediately as the water temperature falls below 0 C.
Pure water, on the other hand, may remain in the liquid state until about
-2 or -3 degrees C.  If you have a freezer which is set only a few degrees
below 0, pure water may not freeze until you touch it.

I've actually seen this.

					Freezing hot or cold,
					Jerry the weasel.
					ixn5c!jlgray