Our colleagues over at scienceblogs.com of Germany have a new cool video. My German is rusty but let me try to translate:
If you mix warm and cold (liquid or gas) you get a temperature that is in between. But what if the “warm” is burning thermite (at thousands of degrees C) and the cold is liquid N, at hundreds of degrees below zero?
What happens is that the temperature difference is just too high so that one can not be sure what to expect. And then my translation kind of trails off, but if you look at the video, I think what happens is that the liquid nitrogen is transferred into an alternative dimension or possibly a different universe.
I might have that wrong, but it is a cool video. Here.