I have not heard this particular fallacy repeated, but since folk believe in Angels, and that G-d created the universe in 6 days, I'm not surprised basic laws of physics are ignored as well.
The claim is repeated so often that many people accept it as fact. But according to scientists, the notion that a body of cold water will reach boiling temperature more quickly than an identical body of hot water under the same parameters is simply false.
This kitchen myth may have started as a way to encourage people to cook with cold water, not hot, which can contain more impurities. It may also have its origins in the fact that cold water generally gains heat more rapidly than water that is already hot, though it will not boil faster.
But under the right circumstances, the reverse phenomenon can occur, and hot water can freeze more quickly than cool water.
Part of the reason appears to be that hotter water loses mass to evaporation, and because it has less mass, less energy is needed to freeze it. That phenomenon was described as far back as 350 B.C. by Aristotle. The phenomenon is now known as the Mpemba effect, named after Erasto B. Mpemba, a student who noticed it in 1963 while using boiled milk to make ice cream and reintroduced the concept to the scientific literature.
[From The Claim: Cold Water Boils More Quickly than Hot Water. - New York Times]
This concludes today's Science Factoid Journal. Join us next week as we discuss whether an airplane can take off on a (giant) treadmill.
