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    Re: equinox
    From: Jim Thompson
    Date: 2004 Mar 26, 06:35 -0400

    George Huxtable clarified:
    
    "Jim Thompson provided a useful explanation, but he has got a bit tied up (I
    think) with some terminology about the Sun. We are used to using the words
    Mean Sun and Apparent Sun, to describe the differences between Mean and
    Apparent Time, in which the Mean Sun is an invention that goes round the
    sky at a uniform speed. But I think that's not the sense in which Jim
    Thomson is using those terms. I hope I am not misunderstanding him."
    
    No, you were right on the mark as usual, George, and as usual I am deeply
    impressed with your diplomacy.  I had mixed up two very weakly related
    analogies from two very different coordinate systems.  I gave up on the way
    I had been struggling to explain it, and instead spent more time learning
    about the ecliptic coordinate system.  I think that now I have a clearer
    summary:
    http://jimthompson.net/boating/CelestialNav/CelestNotes/Coordinates.htm
    
    Jim Thompson
    jim2{at}jimthompson.net
    www.jimthompson.net
    Outgoing mail scanned by Norton Antivirus
    -----------------------------------------
    
    
    

       
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