Quote:
Originally Posted by cyberxxx
He shows that everything we used to know about liquid nitrogen from the movies is wrong. For example, you can put your hand into a bucket with liquid nitrogen for a short time and it won't freeze, you can even put it into your mouth (just don't swallow) and you won't die etc...
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well, it's kinda logical really - for your hand to freeze solid and drop off, it's got to drop down to -200oC. Dipping your hand in something that cold isn't gonna burn or give frostbite because the skin and stuff have to lose their heat first. Not going to happen in a second
-- now fill one of those bottles with liquid hydrogen and put a match to it and we have a real chemistry demo...