Water Bottle Fills Itself From the Air

Your math is off. I don't have a 710ml bottle handy, so I did a 12oz can.

Assuming 6.5cm * 12cm, ignoring the bottom and top surfaces, just the sides of the cylinder, I get 490 cm2, which is.049 m2.

3l *.049 = 0.147; 147ml/h. The can will be a 40% full in an hour, in 75% RH.

I assume the performance in drier conditions is much worse, though.

Although, once the liquid is in the container, it loses surface area? I didnt bother reading to find out whether the inside or outside or both count. math was assuming o

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/afLoyRkNaHU/story01.htm

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