This is not always the case (for example, if the hot water is extremely hot and the cold water is extremely cold) but occurs often enough that it is now referred to as the Mpemba effect.

Erasto Mpemba’s observations initiated decades of research into the Mpemba effect: whether a liquid (typically water) which is initially hot can freeze faster than the same liquid which begins cold.

Erasto Mpemba’s observations initiated decades of research into the Mpemba effect: whether a liquid (typically water) which is initially hot can freeze faster than the same liquid which begins cold.

Winter's cold and snow can produce several interesting phenomena. Here's a few of the ones our meteorologists watch out for ...

The RSC today announced that Croatian Nikola Bregovic has won its worldwide competition to find the best explanation of the famed Mpemba Effect, by which hot water freezes faster than cold water. In a ...

A highlight of the Windsor event will be a team attempt to produce videos to explain various scientific phenomena, which will include The Mpemba Effect. Royal Society of Chemistry President Professor ...

African Union Special Envoy on Youth Cleopatra Mpemba has arrived in Zimbabwe for a Young Women Empowerment Event in collaboration with the African Union (AU) and Go Getter Movement. Taking place ...

Then they test the ‘Mpemba Effect’, to see if warm water freezes faster than cold. Links to: Materials and their Properties, Water Cycle. Key equipment: Water hardness test strips, access to a ...