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Re: Lunars barometric pressure correction
From: Frank Reed
Date: 2005 Apr 20, 23:00 EDT
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."
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
http://www.HistoricalAtlas.com/lunars