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    Re: Sextant Accuracy and anomalous dip
    From: Rodney Myrvaagnes
    Date: 2003 Mar 23, 20:07 -0500

    On Sun, 23 Mar 2003 08:02:12 -0800, Walter Guinon wrote:
    
    >I think that ignoring the propagation time completely would introduce
    >negligible error in establishing GMT. e.g. the delay over 2000 nm would be on
    >the order of 20 milli-seconds.
    >
    It varies a lot for loaded delay lines, which a cable is. It isn't EM
    radiation in a vacuum, or anything like it.
    
    It is easy to measure with present-day equipment, as someone else
    mentioned, but they didn't have oscilloscopes and electronic
    oscillators at that time. Perhaps something like a doorbell buzzer.
    Michelson's measurement of C with whirling mirrors might lead the way
    to a measurement using the technology of the time.
    
    
    
    Rodney Myrvaagnes                                      J36 Gjo/a
    
    
    "Never stand behind a sneezing cow."  Michael Perry
    
    
    

       
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