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Re: [RC] [RC] Frozen Tanks (Mpemba effect) - Lauren E. Reitz

Also take into account that hot water has more minerals dissolved in it (you can dissolve more of a substance in hot water than you can cold water--think how rock candy is made). When water freezes it assumes a crystalline shape that is disrupted by foreign molecules. Luckily so, or without this phenomenon salt would have no effect on icy roads and all of us in eastern PA will be stuck in our driveways tomorrow morning.
 
Lauren Reitz
----- Original Message -----
From: Susan
Sent: Thursday, December 15, 2005 10:08 AM
Subject: Re: [RC] [RC] Frozen Tanks (Mpemba effect)

I've had this experience over and over again.  I'll put warm water out and it has always frozen before ice cold water did.  Perhaps it's OK's humidity or just the air.  I have no idea but I know that's the way it has always been here.

Maryanne Gabbani <msgabbani@xxxxxxx> wrote:
http://en.wikipedia.org/wiki/Mpemba_effect

Interesting stuff. I'd heard this and figured it was silly. Guess not. But apparently it is rather unreliable and dependent on a lot of variables. However, we never really have the problem of frozen anything here.  Unless it's not having enough ice for the gin and tonics.....


Susan [Young], The Princess of Pink
Semper Obliquo (Always aside)

Glenndale Grace Farm, Ft Gibson, Oklahoma U.S.A.

"Ride on! Rough-shod if need be, smooth-shod if that will do, but ride on! Ride on over all obstacles, and win the race!" - Charles Dickens (1812-1870)

Replies
Re: [RC] [RC] Frozen Tanks (Mpemba effect), Susan