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.

Erasto Mpemba, whose name was given to the mystery of why hot water freezes faster than cold water, will be in London this Thursday in a rare visit beyond his own country. He has flown from Tanzania ...