3 ms·
Ten seconds seems like quite a long time to submerge your hand in liquid nitrogen without ending up with serious burns. I'm not sure I believe that. Perhaps it
by slavik81 11y ago
Ten seconds seems like quite a long time to submerge your hand in liquid nitrogen without ending up with serious burns. I'm not sure I believe that. Perhaps it was shorter and you were briefly protected by this:
> Dr Alex Valavanis [notes that] liquid nitrogen "does not immediately feel cold". He says the delay in feeling the cold is down to the "Leidenfrost effect" - which happens when a liquid, in near contact with a mass significantly hotter than the liquid's boiling point, produces an insulating vapour layer.
http://www.bbc.com/news/magazine-19870668 http://www.bbc.com/news/magazine-19870668
- fluxquanta 11y agoI had a physics professor who, on a couple occasions, would gargle a small amount of liquid nitrogen. Between the constant motion of the liquid and the Leidenfrost effect, he was fine. Still wouldn't try it myself.