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    Re: [Fwd: On polar nav]
    From: Peter Fogg
    Date: 2002 Sep 12, 12:11 +1000

    Ask and ye shall receive - this for Walter from an off-list correspondant:
    
    Peter. I did my PhD on pendulous gyroscopes. Part of my field wok was made
    at a station in latitude S80 degrees. I found the latitude of this station
    from my gyroscope observations to within two of arc. Of course nothing works
    at the pole. George.
    
    > > Walter Guinon wrote:
    > >
    > > > Is the behavior of a pendulum a useful indication of nearness to the
    pole?
    > > >
    > > Peter Fogg wrote:
    > > Don't know, but among their lists of indispensable equipment to bring
    for
    > > hanging around the pole I've come across no mention of pendulums. My
    > > understanding of the method used was observations of the sun over a 24
    hour
    > > period. After allowance for change of declination the altitude should
    remain
    > > the same all around the horizon at the pole.
    > > Another little mystery is why they used sextants rather than
    theodolites,
    > > which would seem to be more useful for the purpose.
    >
    >
    
    
    

       
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