[darragh windows]

hot water freezes quicker than cold water fact, but does hot pure water freeze quicker than cold pure anyone tested this

[alanwilson]

where did you get this information from?  never in all my years as an aeronautical eng.r did I ever hear anything like that.

[lovewindows]

hot water freezes quicker than cold water fact, but does hot pure water freeze quicker than cold pure anyone tested this

Doesn't hot water become cold water on the way to becoming frozen ? :

[wightsurf]

Just found this for you..

Mpemba Effect: When Hot Water Freezes before Cold
by Ron Kurtus (revised 30 October 2002)

The Mpemba Effect is a special phenomenon where hot water freezes faster than cold water. The discovery of this effect was made by a high school student named Mpemba in Tanzania, Africa in 1969. He noticed this phenomenon while making ice cream and was curious enough to make note of it. His teachers did not believe it was possible, and it took several years until university professors finally accepted his discovery.

and heres the link if you want it
h ttp://www.school-for-champions.com/science/mpemba.htm

When we were kids we use get some hot water in the winter and poor it over the path and it would freeze..we then used to go skidding along on it.

[darragh windows]

where did you get this information from? never in all my years as an aeronautical eng.r did I ever hear anything like that.

well youve learned something today

[lovewindows]

[
..




The Mpemba Effect is a special phenomenon where hot water freezes faster than cold water.
Oh Aye forgot all about the Mpemba effect 
Are you in a quiz team and what colour is your anorak ?
]

[Sir Squeaky]

where did you get this information from?  never in all my years as an aeronautical eng.r did I ever hear anything like that.

Thought that was common knowledge.

[wightsurf]

Yellow today   

[alanwilson]

never heard about that in my life!
very interesting dr wightsurf.