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Density of air

2009-04-16View Original

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I would like to ask about the relationship between air density and altitude. Thank you
Reply #22009-04-16
Based on the formulas for calculating atmospheric pressure and air density, as well as empirical formulas for air humidity, it is possible to determine the relationship between atmospheric pressure, air density, humidity, and altitude. Elevation (m): 0, 1000, 2000, 2500, 3000, 4000, 5000
Relative atmospheric pressure: 1, 0.881, 0.774, 0.724, 0.677, 0.591, 0.514
Relative air density: 1, 0.903, 0.813, 0.770, 0.730, 0.653, 0.583
Absolute humidity (g/m3): 11, 7.64, 5.30, 4.42, 3.68, 2.54, 1.77
Note: Under standard conditions, the atmospheric pressure is 1, the relative air density is 1, and the absolute humidity is 11 g/m3. As can be seen from the table, for every increase of 1,000 m in altitude, the relative atmospheric pressure decreases by about 12%, the air density decreases by about 10%, and the absolute humidity decreases as altitude increases. This post was last edited by vvvvvbbbbb on 2009-4-16 21:03]
Reply #32009-04-16
http://www.fan2008.net/disbbs.asp?id=317
Reply #42009-04-17
Thank you both for your help; I need to learn more from my friends in the future*

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