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    Re: Pear shaped Earth
    From: Bill Noyce
    Date: 2002 Oct 2, 09:03 -0400

    I don't think Peter's quite right here.  Rather, I would conclude
    that the average length of a degree of latitude is 59.71 miles
    between 0 and 10 degrees, and (5400.6-4797.6)/10=60.30 miles between
    80 and 90 degrees.  To the precision I'm likely to work in, these
    are all equal to 60 degrees...
            -- Bill
    -----Original Message-----
    From: Peter Fogg [mailto:ffive@TPG.COM.AU]
    Sent: Wednesday, October 02, 2002 2:28 AM
    Subject: Re: Pear shaped Earth
    David Weilacher wrote:
    > Can anyone give me a numerical representation of the shape of earth?  I'm
    > thinking something like the length of a line of latitude for each 10 degrees
    > north and south of the equator.
    I'm told that Meridional Distances do indicate this:
    10 d lat  597.11
    20        1194.58
    30        1792.72
    40        2391.75
    50        2991.82
    60        3592.91
    70        4194.91
    80        4797.59
    90        5400.63
    so, if I've understood correctly, a degree at 10d of lat.is 59.71 nm, and a
    degree at 90d of lat. is 60.007 nm.

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