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Effects of low air pressure
A while ago, there was a debate of whether an air mixture of 50:50
oxygen and nitrogen (with appropriate water vapour and carbon dioxide) at a pressure of 0.3-0.4 bar would have harmful effects on humans if breathed for long periods (years or decades). I never saw a resolution of that. That is a very low pressure, but the partial pressure of oxygen is comparable to a relatively modest altitude, so there isn't a problem in that respect. The speculation (and it was no more) was that that high a proportion of oxygen could burn the lungs. Are there any known facts, or is it still guesswork? Regards, Nick Maclaren. |
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