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Liquid nitrogen or dry ice? - Page 3

post #21 of 30
lN2 will yield you better temps
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post #22 of 30
liquid nitrogen

but MUCH more dangerus
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post #23 of 30
Quote:
Originally Posted by binormalkilla View Post
It really, really hurts. I've had it applied to my toe to freeze a wart. You will curse many many times! However it won't break because the heat from the rest of the adjacent tissue will flow into the newly cold area.
You will get a blister of sorts too, from the cells dying.
if you dip your finger in LN2, it will turn to stone that can never return to normal, it is instantly dead and can just crumble into pieces if hit with something. A wart is different, it was a specified target AWAY from your actual finger.
    
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post #24 of 30
Quote:
Originally Posted by born2killU View Post
actually if you spill a little on your skin it will form a vapor barrier and not harm you

if you put your finger in some thats another story , a few seconds and I guess it would crack and fall off
Yes. That is true, thus death would not be instanteous. I forget the name of the effect, but the heat from the body would instantaneously cause evaporation of the LN2 and would form a small air pocket that would prevent direct contact of the LN2 to the skin, for a really really short period of time. I remember seeing a demonstration of this at a science show as a kid where the guy said he was going to dip his arm in a large container of LN2. I thought he was joking but then he actually did it. He threw his arm into the LN2 up to the elbow and quickly pulled it back out and he was ok.

Back to the OP, I say LN2 for colder temps but dry ice for better ease of handling and safety. Also, I think its way easier to buy dry ice than LN2.
    
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post #25 of 30
Can we make this a "Cooling" experiment? lol

Who wants to Volunteer...Maybe Duckieho?
    
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post #26 of 30
Pushing friends into a bathtub of LN eh? I am surprised no one has suggested giving your friends a nice glass of liquid nitrogen on these hot summer days. Now THAT would probably be instant death.
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post #27 of 30
Quote:
Originally Posted by ClaytonCallihan View Post
if you dip your finger in LN2, it will turn to stone that can never return to normal, it is instantly dead and can just crumble into pieces if hit with something. A wart is different, it was a specified target AWAY from your actual finger.
Dear lord, dipping a finger or appendage into LN2 and leaving it there... that would HURT so friggin' bad... my hands sting just thinking about it. Heh...

Anyways, on topic (although the answer has been stated multiple times):
LN2 > Dry ice, but more dangerous/risky.
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post #28 of 30
This same concept occurs with very hot liquid metals as well, water vapor and moisture will form a vapor barrier that will protect for a limited amount of time.
    
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post #29 of 30
A very limited amount of time.

I doubt that it would hurt though, just all of a sudden...nothing.
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post #30 of 30
This thread went from OCing to discussing Mortal Kombat Fatality moves by Sub-Zero. (plays MK techno song)

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