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The fact that hot water freezes faster than cold has been known for many centuries. The earliest reference to this phenomenon dates back to Aristotle in 300 B.C. The phenomenon was later discussed in the medieval era, as European physicists struggled to come up with a theory of heat.
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Someone wrote in with a question about whether hot or cold water freezes faster. Marilyn replied that it is logical that the cold water freezes ... "Hot water freezes faster than cold water. Why does it do so?", Jearl Walker in The Amateur Scientist, Scientific American, Vol. 237, No. 3, pp 246-257; September, 1977.
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Ask the experts your physics and astronomy questions, read answer archive, and more. ... Which freezes faster, hot water or cold water? Asked by: Ben Cobb; Answer; All things being equal, cold water freezes faster.; It takes time for the energy contained in a hot object to be transferred to a cold object.
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Article about experiment with freezing water. ... Does Hot Water Freeze Faster Than Cold? Article #650 ... "How come my hot water pipes always freeze up before my cold water pipes?" And "How come when I put out glasses of hot and cold water when it's - 40°F, the hot water freezes first?"
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If you use water near the boiling point, and use open containers for the water, hot water will freeze before cold water. The following links were found by way of a Google search on: ice cubes freeze faster hot water.
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Mpemba effect - Wikipedia, the free encyclopedia
The Mpemba effect is the observation that, in certain specific circumstances, warmer water freezes faster than colder water. New Scientist recommends starting the experiment with containers at 35 ...
en.wikipedia.org/wiki/Mpemba_effect |
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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.
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The Mpemba Effect states that hot water changes its state from liquid to solid--or freezes--faster than cold water. This does not seem to make sense, but it has been discovered to be true ... Hot Water Freezes Faster Than Cold - United Kingdom Usenet Physics FA...
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