De ultieme ice-bucket challenge, met vloeibaar stikstof! https://youtube/watch?v=Oe6050S7odQ Verklaring (in Engels) waarom dit kan: The Leidenfrost effect, named after 18th century scientist Johann Gottlob Leidenfrost, is when a liquid comes near a mass that’s much warmer than the liquid’s boiling point, which (in the words of Princeton’s helpful physics explainer) results in an insulating vapor layer that “keeps that liquid from boiling rapidly.” In other words, the vapor makes the liquid “float” just above the surface of the object, rather than coming into direct contact with it. Given liquid nitrogen’s boiling point is -321 F, it’s a prime candidate for Leidenfrost effect, which is why Oureshi assumed he’d be safe (so long as the liquid nitrogen didn’t linger on his skin).
Posted on: Thu, 04 Sep 2014 08:59:39 +0000
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