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On
November 1, 2001, the National Weather Service implemented a new
Wind Chill Temperature index [N17],
designed to more accurately calculate how cold air feels on human
skin (see [HANDBOOK]).
The new formula
where
WCT = wind chill temperature / oF, T = air
temperature / oF, and V = wind speed / mph,
replaces the old formula
The
young specialist in English Literature lectured me severely on the
fact that in every century people have thought they understood the
Universe at last, and in every century they were proved to be wrong.
It follows that the one thing we can say about our modern
"knowledge" is that it is wrong.
My answer to him was, "... when people thought the Earth was
flat, they were wrong. When people thought the Earth was spherical
they were wrong. But if you think that thinking the Earth is
spherical is just as wrong as thinking the Earth is flat, then your
view is wronger than both of them put together."
Isaac
Asimov: The Relativity of Wrong,
Kensington Books, New York, 1996.
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Wind chill temperature
formulas comparison: the non-linear correction is versus wind speed,
of course.
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However,
it should matter
at
which rate wronger becomes wrong.
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