Posted on Jan 2, 2025
The Mpemba Effect: Does Hot Water Really Freeze Faster Than Cold Water?
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The Mpemba effect suggests hot water can freeze faster than cold water under certain conditions, a phenomenon first observed by Aristotle.
Erasto B. Mpemba, a Tanzanian student, rediscovered this effect in 1963 while making ice cream, providing the first documented instance that led to further scientific investigation.
Although still debated among scientists, recent studies suggest the Mpemba effect may occur due to differences in how hot and cold water reach thermal equilibrium.
Erasto B. Mpemba, a Tanzanian student, rediscovered this effect in 1963 while making ice cream, providing the first documented instance that led to further scientific investigation.
Although still debated among scientists, recent studies suggest the Mpemba effect may occur due to differences in how hot and cold water reach thermal equilibrium.
The Mpemba Effect: Does Hot Water Really Freeze Faster Than Cold Water?
Posted from science.howstuffworks.com
Science
Physics
Posted 5 d ago
Responses: 3
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I don't know about that but I saw my supervisor throw a Cup of Hot Coffee into the air in
Alaska, heard it freeze, and saw it fall as Ice Crystals on the ground.
Alaska, heard it freeze, and saw it fall as Ice Crystals on the ground.
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2 things come to mind. Water expands when it freezes and becomes less dense which is why ice floats in water. Hot water is also less dense than cold water and floats on cold eater. Since it is already less dense, that may be the avenue to freezing faster than cold water. Just a thought
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