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Erasto Bartholomeo Mpemba [1] (1950–2023) [note 1] was a Tanzanian game warden who, as a schoolboy, discovered the eponymously named Mpemba effect, a paradoxical phenomenon in which hot water freezes faster than cold water under certain conditions; this effect had been observed previously by Aristotle, Francis Bacon, and René Descartes.
The Mpemba effect is the name given to the observation that a liquid (typically water) that is initially hot can freeze faster than the same liquid which begins cold, under otherwise similar conditions. There is disagreement about its theoretical basis and the parameters required to produce the effect.
Mpemba was a confederation in the western Congo Basin, at least from the 13th century. Its northernmost territory, Mpemba Kasi, was incorporated into the founding of the Kingdom of Kongo in the 14th century, and it was conquered. It neighboured the confederations of Vungu and Seven Kingdoms of Kongo dia Nlaza.
The Mpemba Effect relates to hot water freezing faster than cold water in certain circumstances, none of which is identified as having been thrown up in the air. Also, while the Mpemba Effect is not well understood, the trick of throwing hot water into very cold air so that it quickly vaporizes and then condenses into small droplets and freezes ...
David Auerbach, Supercooling and the Mpemba effect: when hot water freezes quicker than cold, American Journal of Physics, 63(10), 1995. Words like superficial and looks do not indicate hard core physics, and this comes from the source supposedly proving Mpemba? Wrong, try again. Hard Raspy Sci 09:54, 5 November 2005 (UTC)
For the first time in over a decade, obesity rates in the United States may finally be heading in the right direction and new weight loss drugs like semaglutide could be part of the reason why. A ...
A New York appeals court judge has denied President-elect Donald Trump's request to delay the Jan. 10 sentencing in his criminal hush money case. Trump’s sentencing will proceed as planned on ...
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