What is the mpemba effect?

The Mpemba effect, named after Erasto Batholomeo Mpemba (b.1950) in 1963, is the observation that, in some circumstances, warmer water can freeze faster than colder water.


What freezes faster hot water or cold water?

Hot water seems to freeze faster than cold water, known as the Mpemba effect. The effect was named after the Tanzanian student who in 1963 noticed that hot ice cream mix freezes faster than a cold one. The effect was first observed by Aristotle in the 4th century BC, then later Francis Bacon and René Descartes.


Why do the water freeze?

May 2016 – When water gets colder than 32 degrees Fahrenheit or zero degrees Celsius, it freezes into ice. As the water gets colder, the molecules of water lose their energy and move more slowly – that’s what it means to be colder. … Because the molecules are all locked into place, ice is hard and stiff.




Author: Giorgos Chr