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Hand dryers are very efficient! They don't seem to do anything for the first ~20 seconds, but in the last 5 seconds you feel all the water evaporating. That's b
by mrb 14y ago
Hand dryers are very efficient! They don't seem to do anything for the first ~20 seconds, but in the last 5 seconds you feel all the water evaporating. That's because only the water surface evaporates, until your skin is exposed dry. You are probably like most people who I see use them in public bathroom, using them only for <10 seconds.
- qznc 14y agoRelevant TED talk: http://www.youtube.com/watch?feature=player_embedded&v=2FMBSblpcrc http://www.youtube.com/watch?feature=player_embedded&v=2... tl;dw: thorougly shake, the wipe with one paper folded once
- mibbitier 14y agoYou're probably right. But I can wipe with a towel in 2 seconds. 20 seconds is far too long to be any use.