A Very Cold Engine

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A Very Cold Engine
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100 Percent Throttle Test of the Common Extensible Cryogenic Engine. Yes, that is unburnt liquid hydrogen frothing around the flange.

Chemistry 200: Fun With Liquid Nitrogen!

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There are lots of ways to blow up 1500 ping pong balls, but the best way is to use liquid nitrogen in a trash can, as this video proves so well.