Quote:
Originally Posted by miriya
go to the tallest mautain and tell me that there is as much oxygen there as down here
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The phenomenon in fact is used in formulas as a constant in providing passenger aircraft with 15 or more ft3/min per passenger of outside air +/- what’s recycled to save fuel (I‘m a single engine private pilot.).
In short, @10,000 feet the oxygen quantity is 50% that of sea level but still consists of 21% concentration.
It’s pretty much the only constant occurring in nature as much as it being the only thing needing to be constant. If oxygen were random and we evolved from goo, are lungs would not be what we have today.