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    Re: Units and area.
    From: Chuck Taylor
    Date: 2006 Jul 17, 21:08 -0500

    --- Dan Allen wrote:

    > The nautical mile is based on the distance from the
    > equator to the pole.  With today's measurements it
    > turns out to be off by a very small amount...

    It's an interesting coincidence that the length of
    the meter is also based on the distance from the
    equator to the pole.  It was originally intended to
    be one ten-millionth of the distance from the North
    Pole to the Equator.  It, too, is off by a very
    small amount from what it was originally intended
    to be.

    There is an interesting account of the French
    expedition (beginning in 1792) that set out to
    accurately measure that distance:  "The Measure of
    All Things, the Seven-Year Odyssey and Hidden Error
    That Transformed the World", by Ken Adler, 2002, ISBN
    0-7432-1676-8.

    Chuck Taylor
    48d N
    122d W


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