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Old February 10th 08, 10:07 PM posted to rec.aviation.piloting
Mxsmanic
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Posts: 9,169
Default Why airplanes taxi

terry writes:

Did I say the pressure would rise if you increased the temperature?


If it follows the combined laws, it will. But in the case of the atmosphere,
it doesn't, because the volume of the atmosphere is not constrained, and the
source of atmospheric pressure is gravity, not the random kinetic energy of
air molecules.