Talk:Air pressure

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Astronaut Analogy

I had added the {fact} tag because of the following: "much as an astronaut living in a pressurized space station ages more slowly than his twin at home." If this was about the "twins paradox", the reason the twin in space ages more slowly is that he's traveling at high speed relative to his earthbound sibling - pressure has nothing to do with it. Besides the pressure in a space station is going to be reasonably close to that of sea level, for multiple reasons. --DinsdaleP 12:31, 19 August 2008 (EDT)


"Everything is compressible"? Well, in terms of hydraulics there are limited cases where this is true, so for the sake of accuracy I consider myself corrected in terms of "less" vs. "non". For what it's worth, I was writing for the target audience of homeschoolers and avoiding getting into the specific classifications of hydraulic fluid compressibility you'd find at a source like this. At the level of the target audience, it seemed more appropriate to contrast hydraulics with pneumatics in terms of Pascal's law, and treat fluids as non-compressible. No problem, though, and I'm glad the other nonsense was removed. --DinsdaleP 10:15, 20 August 2008 (EDT)