Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship


      

Other Books by
Hal Roth
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Re: Plumb-line horizon vs. geocentric horizon

From: Bill (no email)
Date: Thu Feb 03 2005 - 21:12:53 EST

  • Next message: Frank Reed: "Re: Plumb-line horizon vs. geocentric horizon"

    > 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<g>).

    Frank

    Gave this considerable thought, then took the aspirin ;-)

    Bill


  • Next message: Frank Reed: "Re: Plumb-line horizon vs. geocentric horizon"



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