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Comment: Re:Why not nitrous oxide, instead? (Score 1) 591

Yes, those death were not from N2O but from lack of oxygen (as the abstract clearly states). It turns out not breathing oxygen is really bad for you. I don't think anyone has ever died directly from N2O, unless a cylinder fell on them. (but to address the original comment, N2O should be just as effective as N2 for killing people, as would helium or any other inert gas, because it is the lack of oxygen that kills)

Comment: Re: Should use liquid (Score 1) 591

Fabric plus liquid nitrogen is a bad combination. You can safely dip you hand in liquid nitrogen (briefly) (assuming no rings, gloves, or other items on you hands) because it has low specific heat and your body heat quickly evaporates it to form a layer of air around your hand. Spill a little on your clothes and you will instantly get frost bite.

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