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    Re: 1421 The year China discovered longitude
    From: Geoffrey Kolbe
    Date: 2004 May 9, 10:34 +0100

    There has been much speculation on this thread about how the Chinese/Greeks
    could have found longitude using a lunar eclipse - and even doubts if they
    could have done it at all.
    
    A historian would doubtless say that since we have no knowledge of the
    techniques they used, we cannot speculate on the sort of apparatus they
    might have used or the accuracy they could have attained in measuring
    longitude. To do so would be imposing our Western Cultural thinking on a
    society who did not think like we do or even see the world the same way we do.
    
    Well, I am not a historian. I think it would interesting and fun for some
    members of this list to think about how the ancients might have gone about
    this and then actually try and measure their relative longitudes using
    methods developed individually or collectively. I even think it would be
    interesting enough to write up the endeavor for publication.
    
    I don't have an almanac to hand at this time, but it would seem that the
    next lunar eclipse will occur on 28th October this year at around 03:45 hrs
    GMT.
    
    Anyone else interested?
    
    Geoffrey Kolbe
    
    
    

       
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