Nice FAQ... the following doesn't seem correct though.
"Ambient air contains 21% oxygen, 78% nitrogen and 1% trace gases (which
includes about 0.4% carbon dioxide)."
My understanding is that there is 280 PPM to 380 PPM (depending on
where its measured) of CO2 in the atmosphere. This would be 0.028% to
0.038% of CO2 in ambient air.
(i.e. 380/1,000,000 X 100 = 0.038%)
(i.e. Nitrogen 78% or 780,000 PPM... 780,000/1,000,000 X 100 = 78%)
Just thought I would let you know... after
all, 0.4% (4000 PPM) would really freak out the
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