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    Re: Plumb-line horizon vs. geocentric horizon
    From: Bill B
    Date: 2005 Feb 3, 21:12 -0500

    > If you want to look "straight at" the Earth's geometric center, place an
    > ordinary aspirin tablet on the floor. That's about 12' minutes of arc in
    > apparent diameter (use half an aspirin if you're at 15 or 60 degrees
    > latitude).
    
    Frank
    
    Gave this considerable thought, then took the aspirin ;-)
    
    Bill
    
    
    

       
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