Hot Water Freezes Faster Than Cold Water

Evaporation more hot water will evaporate than cold water thus reducing the amount of water remaining to be frozen.

There exists a set of initial parameters and a pair of temperatures such that given two bodies of water identical in these parameters and differing only in initial uniform temperatures the hot. With carefully chosen samples of water. The physics of why hot water sometimes freezes faster than cold water for decades physicists have debated whether the phenomenon exists and how to study it physicist avinash kumar of simon fraser. The main factors appear to be.

New experiments provide support for a. Under extremely specific conditions. Different mechanisms come into play depending on the conditions. But observations over thousands of years as well as countless modern experiments have shown that the opposite is true under carefully controlled conditions hot water at times seems to freeze faster than cold water.

Yes in our experiment the hot water did in fact freeze faster than cold water. It is not guaranteed if you conduct this experiment the hot water will freeze faster. This is often called the mpemba effect. It seems obvious that the answer should be no because all things being equal hot water takes longer to cool down than cold water and so it couldn t possible freeze faster.

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Another theoretical speculation is that water develops convection currents and temperature gradients as it cools a rapidly cooling glass of hot water will have greater temperature differences throughout and lose heat more quickly from the surface whereas a uniformly cool glass of water has less of a temperature difference and there s less convection to accelerate the process. Monwhea jeng proposes as a more precise wording. There is no definitive explanation for why hot water may freeze faster than cold water. There is no definitive explanation for why hot water may freeze faster than cold water.

More hot water will evaporate than cold water thus reducing the amount of water remaining to be frozen. The phenomenon when taken to mean hot water freezes faster than cold is difficult to reproduce or confirm because this statement is ill defined. Different mechanisms come into play depending on the conditions. The main factors appear to be.

The effect was named after the tanzanian student who in 1963 noticed that hot ice cream mix freezes faster than a cold. If the water is initially hot cooled water at the bottom is denser than the hot water at the top so no convection will occur and the bottom part will start freezing while the top is still warm.