Effect Definition
Although widely mentioned there are very few, if any, modern descriptions of exactly what the effect is and how it may be observed. It is not clear whether 'freezing' refers to the point at which water forms a visible surface layer of ice, or the point at which the entire volume of water becomes a solid block of ice. Some experiments have instead measured the time until the water reached 0 °C.
There are no reliable sources that indicate exactly how to demonstrate the effect and under exactly what conditions it occurs.
Read more about this topic: Mpemba Effect
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