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Old 2021-01-18, 16:51   #86
xilman
Bamboozled!
 
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"π’‰Ίπ’ŒŒπ’‡·π’†·π’€­"
May 2003
Down not across

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Quote:
Originally Posted by Uncwilly View Post
I have retrieved items out of a 550 C furnace before barehanded. Yes, actually picking up items that were at 550. They were low thermal mass, highly conductive, and the contact area was small.

I will dig out the details of the tests I mentioned above later.
At the other end of the scale, I have dipped my hands in liquid nitrogen on a number of occasions.

One of our favourite tricks with newbie chemists was to put some rubber tubing in LN2 and spray them with droplets; then to smash the tubing on a bench to shower them with rubber shrapnel, and finally to stir the Dewar with a forefinger for 30 seconds or so and then hit the bench hard with the same finger.
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