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    Re: Index corr., Octant as dipmeter
    From: Jared Sherman
    Date: 2004 Nov 23, 11:07 -0500

    Andre-
    
    
    It isn't quite the same. Google "radar over the horizon" to see how
    extensive this is these days. I don't know if this was being exploited at
    all in WW2 but suspect even then, the radar horizon was known to be beyond
    the visual horizon. Radio waves tend to skip and bounce, so even then the
    engineers would have been aware that they could exceed visual horizons, even
    if only slightly.
    
    
    

       
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