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    Re: Lunars barometric pressure correction
    From: Frank Reed
    Date: 2005 Apr 20, 23:00 EDT
    Bill you wrote:
    "Big difference between the two formulas when the elevation
    gets into miles."
     
    Yes, and given today's cheap computing, might as well use the exponential formula. By the way, you can also use it to answer the question "where does space begin?" Just set the equation for density of the air:
      density = exp(-altitude/34,000feet)
    equal to 0 and solve for the altitude. :-)
     
    [it's actually the equation for relative density. that is, the density as a percentage of sea level density]
     
    -FER
    http://www.HistoricalAtlas.com/lunars
       
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