Hot Water Freezes Faster Than Cold Water

The main factors appear to be.

The phenomenon when taken to mean hot water freezes faster than cold is difficult to reproduce or confirm because this statement is ill defined. This is often called the mpemba effect. Hot water seems to freeze faster than cold water known as 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.

The effect was named after the tanzanian student who in 1963 noticed that hot ice cream mix freezes faster than a cold. With carefully chosen samples of water. Monwhea jeng proposes as a more precise wording. Under extremely specific conditions.

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. Different mechanisms come into play depending on the conditions. Different mechanisms come into play depending on the conditions. Evaporation more hot water will evaporate than cold water thus reducing the amount of water remaining to be frozen.

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Yes in our experiment the hot water did in fact freeze faster than cold water. More hot water will evaporate than cold water thus reducing the amount of water remaining to be frozen. The main factors appear to be. 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.

It is not guaranteed if you conduct this experiment the hot water will freeze faster. There is no definitive explanation for why hot water may freeze faster than cold water. New experiments provide support for a. 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.

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. Hot water really can freeze faster than cold water a new study finds.