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    Arc shapes
    From: Bill B
    Date: 2004 Oct 22, 17:37 -0500

    A follow up question to help me visualize relationships.
    
    I could plot Hc against azimuth for several dates, but I am hoping the more
    learned among you have a quick visual answer.
    
    Assume a fixed position of N40, W 90.  If I were to plot Hc for Sun each
    minute it would form an arc.
    
    Now assume I do this on winter solstice, an equinox, and summer solstice.
    
    I understand the Hc will shift by approx. 23d 26.4' along the y axis between
    dates, and the the summer solstice arc will extent furthest out on the x
    axis.
    
    My question is, if I slid all three plots together, would the curves be
    similar (again noting there will be areas missing in the equinox and winter
    solstice plots)?
    
    Thanks
    
    Bill
    
    
    

       
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