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From: jpl@allegra.UUCP (John P. Linderman)
Newsgroups: net.sci
Subject: Re: Wind Chill Factor?
Message-ID: <2669@allegra.UUCP>
Date: Sun, 5-Aug-84 14:55:28 EDT
Article-I.D.: allegra.2669
Posted: Sun Aug  5 14:55:28 1984
Date-Received: Mon, 6-Aug-84 01:09:44 EDT
References: <244@parallel.UUCP>
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 17

Here's a formula I pulled out of the New York Times a few years ago.
I can't vouch for its accuracy.  The sign change at high velocities
is disturbing in the abstract, but since the reversal occurs around
100 meters per second (223 miles per hour) the formula may well be
correct for conditions most of us will experience.  [In a 220 mph
wind, frostbite is probably less of a concern than where you will
come down.]

    v = wind velocity in meters / second
    t = temperature in degrees Celcius
    skin temperature is approximately 33 degrees C

    heat loss in kilocalories / square meter is
	      1/2
      ( 10 * v   + 10.45 - v ) * ( 33 - t )

John P. Linderman  Department of Obscure Formulae  allegra!jpl