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    Re: shortest twilight problem...
    From: George Huxtable
    Date: 2010 Jul 1, 08:05 +0100

    Thanks to Frank for bringing to our notice Godfray's book on Astronomy, in
    the context of a solution to the minimum-twilight problem. I hadn't come
    across him, or it, before.
    
    A look through the contents index immediately put it into my must-have
    category, and as is often the case with old textbooks, a copy was availably
    locally for a few pounds. It's on its way.
    
    George.
    
    contact George Huxtable, at  george@hux.me.uk
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    
    
    
    
    

       
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