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    Re: Astrolabe. was: [NAV-L] The point of it all
    From: R.H. van Gent
    Date: 2006 Jun 29, 13:29 +0200

    Lu Abel wrote:
    
    > As a side note, Muslims use true (great-circle)
    > azimuth (maybe that's because there was no concept
    > of Mercator projections and rhumb-line directions
    > back when the astrolabe was invented.  When I was
    > offered the opportunity to tour a mosque in the
    > San Francisco Bay area I was surprised to see it
    > was oriented to the northeast, not southeast as I
    > first expected.  The tour guide confirmed that the
    > direction was great-circle and not rhumb line.
    
    However, judging from the discussion and some of the links mentioned in
    
    http://en.wikipedia.org/wiki/Qibla
    
    there are still Muslims who believe that not the great-circle but the
    (shortest) rhumb line to Mecca should be followed.
    
    Rob van Gent
    
    
    

       
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