Mpemba paradox results from hydrogen-bond anomalous relaxation. Heating stretches the O:H nonbond and shortens the H-O bond via Coulomb coupling; cooling reverses this process to emit heat at a rate depending on its initial storage. Skin ultra-low mass density raises the thermal diffusivity and favors outward heat flow from the liquid.
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http://dx.doi.org/10.4161/23328940.2014.974441 | DOI Listing |
Phys Rev Lett
March 2024
Departamento de Matemáticas, Universidad Carlos III de Madrid, 28911 Leganés, Spain.
Many systems, when initially placed far from equilibrium, exhibit surprising behavior in their attempt to equilibrate. Striking examples are the Mpemba effect and the cooling-heating asymmetry. These anomalous behaviors can be exploited to shorten the time needed to cool down (or heat up) a system.
View Article and Find Full Text PDFTemperature (Austin)
May 2016
FeverLab, Trauma Research, St. Joseph's Hospital and Medical Center, Phoenix, AZ USA.
Mpemba paradox results from hydrogen-bond anomalous relaxation. Heating stretches the O:H nonbond and shortens the H-O bond via Coulomb coupling; cooling reverses this process to emit heat at a rate depending on its initial storage. Skin ultra-low mass density raises the thermal diffusivity and favors outward heat flow from the liquid.
View Article and Find Full Text PDFPhys Chem Chem Phys
November 2014
NOVITAS, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
The Mpemba paradox, that is, hotter water freezes faster than colder water, has baffled thinkers like Francis Bacon, René Descartes, and Aristotle since B.C. 350.
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