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Taking the Ice Bucket Challenge With Liquid Nitrogen

samzenpus posted about three weeks ago | from the coldest-shower dept.

Science 182

Nerval's Lobster writes As a trend, the ALS Ice Bucket Challenge seems a bit played out—who hasn't yet dumped a bucket of icy water over his or her head for charity? But that didn't stop Canadian chemist Muhammad Qureshi from executing his own sublimely scientific, potentially dangerous variation on the theme: After donating to the ALS Association, he proceeded to douse himself with a bucket of liquid nitrogen. Anyone who's taken a chemistry class, or at least watched the end of Terminator 2, knows that liquid nitrogen can rapidly freeze objects, leaving them brittle and prone to shattering. Pouring it on your skin can cause serious frostbite. So what prevented that bucketful of liquid nitrogen from transforming Qureshi into a popsicle? In two words: Leidenfrost effect. Named after 18th century scientist Johann Gottlob Leidenfrost, the effect 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.

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tag this crap as idle, please (-1, Offtopic)

siddesu (698447) | about three weeks ago | (#47822901)

i don't need to see it in my news for nerds stream.

Re:tag this crap as idle, please (0)

Anonymous Coward | about three weeks ago | (#47823039)

Shut up.

Re:tag this crap as idle, please (-1)

Anonymous Coward | about three weeks ago | (#47823057)

keep sucking me.

Ultimate Ice Buckey Challenge (4, Funny)

chfriley (160627) | about three weeks ago | (#47824041)

Hal Finney -an ALS sufferer- did the ultimate Ice Bucket challenge with liquid nitrogen last week (Aug 28, 2014) when he was cryopreserved after passing away from ALS:

http://en.wikipedia.org/wiki/H... [wikipedia.org]

Re:tag this crap as idle, please (1)

mark-t (151149) | about three weeks ago | (#47823071)

So don't use it. Problem solved.

Re:tag this crap as idle, please (-1)

Anonymous Coward | about three weeks ago | (#47823195)

keep sucking, then swallow.

Re:tag this crap as idle, please (1)

Half-pint HAL (718102) | about three weeks ago | (#47823611)

Then you're not really a nerd.

Another two words (1)

Anonymous Coward | about three weeks ago | (#47822911)

wind sock.

Seriously.

People who did High School Chemistry know this... (0)

Harlequin80 (1671040) | about three weeks ago | (#47822913)

If you did chemistry at highschool surely you did the gold fish in liquid nitrogen and then done the table spoon of dancing liquid nitrogen on your hand?

Like I get that this would be kind "geeky / cool" in MAD magazine or FHM.... But seriously I kinda thought slashdot played to a higher educated audience....

Re:People who did High School Chemistry know this. (5, Funny)

Anonymous Coward | about three weeks ago | (#47822971)

I was educated in the inner city, you insensitive clod. We didn't get any liquid nitrogen at my school because we might make drugs out of it.

Re:People who did High School Chemistry know this. (0)

Anonymous Coward | about three weeks ago | (#47823055)

Wait, making drugs? We thought it was already drugs!

Re:People who did High School Chemistry know this. (1)

Anonymous Coward | about three weeks ago | (#47823293)

High school chemistry classes are garbage; a grand majority of students don't learn anything, but just memorize information.

Re:People who did High School Chemistry know this. (1)

TheRaven64 (641858) | about three weeks ago | (#47823569)

Exactly what I came here to post. We had the demonstration of what happens when you immerse something in liquid nitrogen vs what happens when you pour it over the top. Even if you didn't get to play with liquid nitrogen in school, there are lots of videos of this.

Re:People who did High School Chemistry know this. (1)

FireFury03 (653718) | about three weeks ago | (#47823885)

Exactly what I came here to post. We had the demonstration of what happens when you immerse something in liquid nitrogen vs what happens when you pour it over the top. Even if you didn't get to play with liquid nitrogen in school, there are lots of videos of this.

Although I was under the impression that the Leidenfrost effect only worked well on bare skin, so I'm surprised he didn't get frost burns to his scalp and clothed parts.

so the T-1000 shouldn't have frozen? (2)

Anonymous Coward | about three weeks ago | (#47822921)

Does this mean Terminator 2 is debunked by Leidenfrost?

Re:so the T-1000 shouldn't have frozen? (3, Informative)

Anonymous Coward | about three weeks ago | (#47823663)

No, it works for a few seconds, the evaporation of the nitrogen still extracts energy from the skin. If you pour it for more than a few seconds your hand will freeze and then crack.

it tingles (2, Informative)

sayfawa (1099071) | about three weeks ago | (#47822923)

Yeah, liquid nitrogen is pretty safe. Dip your hand in it, throw it at people, put it in your ice cream; all valid uses. Unless you drink it or jump in a pool of it, it's mostly harmless

Re:it tingles (1)

Anonymous Coward | about three weeks ago | (#47823019)

In that case, I await your liquid nitrogen bucket challenge posting on YouTube...

Re:it tingles (1)

Anonymous Coward | about three weeks ago | (#47823075)

I would, but vacuum flasks don't come cheap. If you sponsor me to the tune of a full one or two, I'll do it.

Re:it tingles (0)

Anonymous Coward | about three weeks ago | (#47823653)

The nitrogen itself is really cheap. You can get it for 20ct/l or even less. You can hire the dewar from the company that sells the LN, but it is indeed quite expensive. You can store (at least for a few days) the LN easily into a thermos for coffee, but you have to drill a hole in the top, otherwise it will explode from the evaporation.

Re:it tingles (5, Informative)

93 Escort Wagon (326346) | about three weeks ago | (#47823081)

In my old job we used a lot of liquid nitrogen - mainly to transfer carbon dioxide around in various scientific apparatus (a mass spectrometer, for one).

Anyone who has worked extensively with the stuff will tell you it is NOT safe unless you are careful. The Leidenfrost effect works... for a relatively short duration. But the co it used application of liquid nitrogen to a specific area rapidly cools the immediate surroundings, and then the effect stops working - especially if the nitrogen doesn't have a way to skitter away on that layer of gas (if you were to pour it into a cupped palm, for example).

Also, small droplets (such as are generated from the stuff boiling when you're freezing carbon dioxide into a cold finger) don't seem to have much difficulty reaching one's skin, Leidenfrost or no. Most of us in the lab frequently had small burns on the thumb sides of our hands.

Re:it tingles (5, Informative)

phantomfive (622387) | about three weeks ago | (#47823279)

In my physics book, the author told about his own personal experiments with the Leidenfrost effect. He would plunge his hand into a bucket of molten lead (after dipping it in water), and pretty soon had advanced to putting liquid nitrogen in his mouth and breathing it out.

He stopped the last one after it went slightly wrong, and all his teeth cracked. His dentist suggested he not do it any more.

Re:it tingles (5, Funny)

PolygamousRanchKid (1290638) | about three weeks ago | (#47823285)

Anyone who has worked extensively with the stuff will tell you it is NOT safe unless you are careful.

Gee, and there I was, going to tell those Knoxvillesque folks to try the "Liquid Nitrogen Enema Challenge."

Re:it tingles (0)

Anonymous Coward | about three weeks ago | (#47823295)

Some fool will kill themselves doing this.

Re:it tingles (1)

viperidaenz (2515578) | about three weeks ago | (#47823331)

At least they'll be in the running for a Darwin Award.

Re:it tingles (0)

Anonymous Coward | about three weeks ago | (#47823477)

At least they'll be in the running for a Darwin Award.

Not if they have already reproduced.

Re:it tingles (4, Funny)

infolation (840436) | about three weeks ago | (#47823581)

Then we need to encourage the 'family ice bucket challenge'.

Leidenfrost? (-1)

Anonymous Coward | about three weeks ago | (#47822927)

Sounds like BS.

Translation for kids... (0)

Anonymous Coward | about three weeks ago | (#47822929)

Don't try this at home.

Not that you're likely to have any if you don't know how to handle it properly, but just in case you have the resources, don't do it.

Then again, I'm sure sooner or later somebody will kill themselves with an ice bucket. Y'know, besides the guy who fell into the ice machine.

Re:Translation for kids... (4, Insightful)

Opportunist (166417) | about three weeks ago | (#47823147)

My first reaction when I read this: I think we found the winner of 2014's Darwin Award. No, not that guy. But some copycat who has, unlike him, no clue about Physics and insists in topping the performance.

Re:Translation for kids... (2)

gmuslera (3436) | about three weeks ago | (#47824015)

Considering the average adult that went through the Ice Bucket Challenge, it would be a great advice for them too. I won't be surprised at all if it ends killing more people than ALS.

Somewhat cool and A LOT stupid (-1)

Anonymous Coward | about three weeks ago | (#47822931)

This was somewhat cool and very, very, VERY a lot stupid.

Re:Somewhat cool and A LOT stupid (1)

Colin Lewis (3398815) | about three weeks ago | (#47823303)

Liquid Nitrogen? I'd say VERY cool. Even cold.

Is it really the Leidenfrost effect? (2)

NotSoHeavyD3 (1400425) | about three weeks ago | (#47822965)

I ask since it always seems that they use that one to explain everything even when it doesn't make sense. (IE fire walking where I saw Jearl Walker use plastic bags to build up sweat on his feet to do that but it still works even if you don't do this. BTW it seems the only requirement to fire walking is just don't stop.)

Re: Is it really the Leidenfrost effect? (1)

Anonymous Coward | about three weeks ago | (#47823089)

Wow, Jearl Walker. I remember reading about his exploits in my Halliday and Resnick physics book. His story of dipping his hand in molten lead was a great read.

Re:Is it really the Leidenfrost effect? (5, Informative)

Anonymous Coward | about three weeks ago | (#47823095)

It really is this time. The Leidenfrost effect comes into play when a surface is much hotter than a given material's boiling point. The Leidenfrost effect explains safe contact of hot skin with liquid nitrogen, wet hands surviving molten lead, and why water skitters on a hot skillet. Any time a liquid contacts a surface much hotter than its boiling point, such that it can be suspended in the air by convection currents, the Leidenfrost effect is responsible. In the LN2 case, your skin is far enough above the -195C boiling point that the nitrogen boils off before it touches your skin. In the molten lead case, the water on your hands must evaporate before your hands can start burning, this creates a temporary steam bubble that insulates your hand much like a winter coat. The water on a hot skillet case is the simplest case, where radiative and convective heat transfer is so intense that hot air and water vapor form a convective bubble underneath the boiling water bubble and instabilities in the air bubble then cause the water bubble to flow towards a theoretical edge and skitter around the pan.

The firewalking claim is a little dubious, it seems more likely that the short contact time combined with the small surface area exposed during normal walking is responsible for the undamaged feet. Most firewalkers don't seem to sit around getting their feet good and sweaty before firewalking.

Something is missing (0)

Anonymous Coward | about three weeks ago | (#47822975)

He didn't shout "I AM INVINCIBLE!" [youtube.com] first.

the only winning move is to quit (0)

Anonymous Coward | about three weeks ago | (#47822977)

As a trend, the ALS Ice Bucket Challenge seems a bit played out, but gosh darn it we're going to wring all the money out of it. Every last drop.

Ice suicide challenge [bbc.com]

I'd have preferred (3, Informative)

Rick in China (2934527) | about three weeks ago | (#47822987)

If he were to turn into a popsicle.

I'm starting to wonder... (5, Interesting)

mark-t (151149) | about three weeks ago | (#47822999)

... how long will it take before somebody dies?

I don't mean to sound morbid here, I am just starting to think that this whole thing is pretty darn pointless, If you want to donate money to ALS, do it... but this ice bucket challenge thing is turning into a competition of who can one-up who in how they go about it, and I think it's now only a matter of time before somebody gets seriously hurt or killed.

Re:I'm starting to wonder... (2)

Payden K. Pringle (3483599) | about three weeks ago | (#47823023)

Just so it's clear, ALS causes a person to lose feeling in their body. The ice bucket challenge's purpose is to simulate that effect so that you know what they go through in a much less permanent way. How it "feels" to have ALS (hint: it doesn't).

I agree, although I can't imagine how someone would die from it unless they had a pre-existing condition, in which case they shouldn't be doing it to begin with.

Re:I'm starting to wonder... (0)

Anonymous Coward | about three weeks ago | (#47823101)

One of the dangers seems to be getting hit in the head with a bucket (or some much larger container) full of water. Many people seem to have some serious trouble holding onto the bucket while pouring the water, as can be seen in this collection of videos [youtube.com] .

Re:I'm starting to wonder... (1)

SuricouRaven (1897204) | about three weeks ago | (#47823255)

I think that excuse was made up after the fact.

Re:I'm starting to wonder... (0)

Anonymous Coward | about three weeks ago | (#47823031)

already happened... oddly enough to one of the guys that started the whole thing.

http://hollywoodlife.com/2014/08/19/corey-griffin-dead-ice-bucket-challenge-co-founder-dies-drowning/

Re:I'm starting to wonder... (1)

RabidTimmy (1415817) | about three weeks ago | (#47823115)

No, he drowned diving after a charity event, not taking the challenge

Re:I'm starting to wonder... (0)

Anonymous Coward | about three weeks ago | (#47823233)

No, he drowned diving after a charity event, not taking the challenge

Diving from a building, at 2 AM... yeah, I'm going to go way out on a limb and postulate the involvement of alcohol.

Re:I'm starting to wonder... (0)

Anonymous Coward | about three weeks ago | (#47823037)

That is how humans operate. Get used to it.

Re:I'm starting to wonder... (1)

mark-t (151149) | about three weeks ago | (#47823051)

How is it that we managed to evolve in the first place, exactly?

Re:I'm starting to wonder... (3, Insightful)

Opportunist (166417) | about three weeks ago | (#47823151)

By weeding out the ones that don't know when to quit.

Re:I'm starting to wonder... (1)

jittles (1613415) | about three weeks ago | (#47824067)

By weeding out the ones that don't know when to quit.

Hey, I haven't died yet!!!

Re:I'm starting to wonder... (0)

Anonymous Coward | about three weeks ago | (#47824125)

It's a work in progress.

Re:I'm starting to wonder... (1)

SuricouRaven (1897204) | about three weeks ago | (#47823277)

Stupid breeds.

Re:I'm starting to wonder... (1)

jareth-0205 (525594) | about three weeks ago | (#47823599)

How is it that we managed to evolve in the first place, exactly?

Because it is relatively rare and relatively unusual. But without the wish to go further and take risks we wouldn't have ever harnessed fire, let alone achieved civilisation. Life is about *doing things*, not eliminating all possible risk.

Some people want to live a long boring life, and some people want to go to the moon, even if it means there's a high chance of death in the process.

Re:I'm starting to wonder... (5, Interesting)

radtea (464814) | about three weeks ago | (#47823047)

... how long will it take before somebody dies?

Already happened: http://news.nationalpost.com/2... [nationalpost.com]

I've stuck my hand in liquid nitrogen (it feels strangely warm) and so can attest to the protective effect of the gas blanket (which is highly insulating) but it is insanely dangerous to pour a bucket of LN2 over your head, and doing so is an invitation to people who aren't as smart or careful as you to do even more stupid and risky things.

Donate to ALS research [*], by all means! But please, please, don't participate in this ridiculous pyramid scheme of increasingly dangerous stupidity.

[*] I do not donate to ALS because it is not one of my causes, but I encourage you to think carefully about what you care most about and sign up as a steady, long-term donor to a few causes that are really important to you... this is of far more long-term benefit than episodic giving. If ALS is what matters most to you, go for it!

Re:I'm starting to wonder... (1)

Anonymous Coward | about three weeks ago | (#47823133)

I do not donate to ALS because it is not one of my causes, but I encourage you to think carefully about what you care most about and sign up as a steady, long-term donor to a few causes that are really important to you... this is of far more long-term benefit than episodic giving.

I like the FFRF [ffrf.org] for one. I feel that working against religion is one of the most important things we can do for the long term benefit of all people. Make that all life. It will even help with things like ALS (or any other medical condition) as people will look for solutions instead of wishing at the sky.

Re:I'm starting to wonder... (1)

Half-pint HAL (718102) | about three weeks ago | (#47823627)

It will even help with things like ALS (or any other medical condition) as people will look for solutions instead of wishing at the sky.

One slight flaw in that argument: the millions of religious doctors and researchers all over the world who are constantly looking for practical solutions to diseases such as ALS.

Re:I'm starting to wonder... (2)

drinkypoo (153816) | about three weeks ago | (#47823735)

Donate to ALS research [*], by all means!

So IOW, don't give your money to the ALS foundation, since only around a quarter of it at best will go there.

Re:I'm starting to wonder... (1)

defnoz (1128875) | about three weeks ago | (#47823743)

Already happened: http://news.nationalpost.com/2... [nationalpost.com]

I'm no doctor, but I think the cause of death is less likely to have been "[taking] part in an ice bucket challenge" than subsequently "leaping into [shallow] water from 25-metre high cliffs."

Ontopic, I think everyone who has ever used LN2 will have dipped their hand into it. You get a couple of seconds of feeling perfectly fine, then a very sudden searing cold burn. Where I work we were given felt gloves to use when dispensing it until I pointed out that if you actually get LN2 on them (rather than just handling cold metal) it will soak in and be right next to your skin. Now we just use standard marigolds.

Re:I'm starting to wonder... (1)

mrchaotica (681592) | about three weeks ago | (#47823841)

I encourage you to think carefully about what you care most about and sign up as a steady, long-term donor to a few causes that are really important to you... this is of far more long-term benefit than episodic giving.

I recommend the Free Software Foundation.

Re:I'm starting to wonder... (2)

flappinbooger (574405) | about three weeks ago | (#47823969)

I encourage you to think carefully about what you care most about and sign up as a steady, long-term donor to a few causes that are really important to you... this is of far more long-term benefit than episodic giving.

I recommend the Free Software Foundation.

dump a bucket of microsoft disk cases and old win95 floppies on your head for the FSF challenge

Re:I'm starting to wonder... (1)

jones_supa (887896) | about three weeks ago | (#47823505)

I don't mean to sound morbid here, I am just starting to think that this whole thing is pretty darn pointless, If you want to donate money to ALS, do it... but this ice bucket challenge thing is turning into a competition of who can one-up who in how they go about it, and I think it's now only a matter of time before somebody gets seriously hurt or killed.

Actually this is the perfect way to collect donations for a good cause: create a silly meme and create a culture of making a donation when doing it. People love this kind of shit.

Re:I'm starting to wonder... (0)

Anonymous Coward | about three weeks ago | (#47823823)

There was a man who poured a bucket of ice on himself and his infant granddaughter, confined to a play-chair. She's fine, but WTF, man? Ice falling from 7 feet high would hurt, and water could have filled her lungs (she was looking up wondering what he was doing).

will it help? (0)

Anonymous Coward | about three weeks ago | (#47823025)

Now that everybody and his dog has taken the #icebucketchallenge, will it really make a difference to ALS? All those cancer runs haven't solved cancer...

Sometimes what is needed isn't money it is just the right one person with the right idea at the right time.

Possible hair lost (1)

kcelery (410487) | about three weeks ago | (#47823053)

After dipping a rose into liquid nitrogen, the petals are flaky as potato chips.

Then the guy combed his hair to remove anything frozen there. Such action
might break those hair frozen by the LN. I don't think he would like to show it
in the video.

Why didn't they use a better example? (0)

Anonymous Coward | about three weeks ago | (#47823059)

When you flick water on a hot griddle and the droplets skitter around, yeah, that's Leidenfrost effect.

Geez, it's not like it even needed a flawed car analogy. Wait, on second thought, perhaps the concept is *too* clear!

I hereby request said flawed vehicular analogies to help confuse a very straightforward, comprehensible concept. Bonus points if analogies needlessly involve a train as well.

Thank you in advance.

Re:Why didn't they use a better example? (0)

Anonymous Coward | about three weeks ago | (#47823091)

So, basically, you have a car. And you're driving down the road, and it starts to rain. This is a pretty rainy, seriously intense thunderstorm. Like, the kind that causes your dogs to go hide under the bed. Proof that cats are smarter. Anyway, you've got this car. And it's rainy. And, thus, there's water on the road. All of this precipitation coming down and slamming into the existing layer of water causes your train to bounce up and down microscopically, creating a gap between you and the rails as you're moving with your auntie and your uncle in bel-air. I whistled for a cab and when it came near the license plate said fresh and there were dice in the mirror. If anything I could say that this cab was rare but I thought, naw, forget it, yo holmes to bel-air. I pulled up to the house about seven or eight and said to the cabbie "Yo holmes smell ya later." Looked at my kingdom, I was finally there, to sit on my throne as the prince of bel-air.

What were we talking about again?

Re:Why didn't they use a better example? (1)

viperidaenz (2515578) | about three weeks ago | (#47823349)

It's like when a rain drop hits a hot exhaust manifold...

Re:Why didn't they use a better example? (1)

Half-pint HAL (718102) | about three weeks ago | (#47823631)

Well, imagine you're driving on a really hot day. The road is really hot. So your tyres start to melt and you lose traction. It's a bit like that, because the liquid loses traction on the solid surface.

I did it first ! (5, Interesting)

dargaud (518470) | about three weeks ago | (#47823127)

In 1994 I had a liquid nitrogen tube break above my head while preparing an experiment for Antarctica [gdargaud.net] . About 30 liters poured on my head in a second. I felt it go instantly trough my clothing, run over me, and on the floor. Everybody else in the lab ran away, but I couldn't because it formed a dense could, I couldn't see anything and I was behind a lot of equipment and cables. Then the floor exploded: I couldn't see what was going on but very loud cracking and banging noises later proved to be the tiles shattering. Fortunately I was wearing security shoes and just stood my ground. After the fog cleared I saw some faces at the door: "Are you still alive?"

Re:I did it first ! (5, Funny)

Neil Boekend (1854906) | about three weeks ago | (#47823229)

Did you take the chance to reply "I'm not feeling so hot"?

Re:I did it first ! (3, Funny)

MrKaos (858439) | about three weeks ago | (#47823705)

Did you take the chance to reply "I'm not feeling so hot"?

Nah, someone else said - "that was cool!"

Re:I did it first ! (2)

KingOfBLASH (620432) | about three weeks ago | (#47823319)

Is it normal to have liquid nitrogen stored up high?

Seems kind of dangerous and that this stuff would be buried in the ground (as people would do with a tank of diesel, for instance)

Re:I did it first ! (1)

dargaud (518470) | about three weeks ago | (#47823367)

I have no idea. I was a student and just wanted to test some of my hardware at cold temperatures. The guys in charge of cryogenics were on vacation but other guys were all like "we know this stuff, we can run the test..." Yeah, right.

Re:I did it first ! (0)

Anonymous Coward | about three weeks ago | (#47823655)

At my university there was a large tank outdoors within a locked cage. Above ground, but inaccessible. Technicians would transfer it out of the tank into portable flasks as required. It certainly didn't travel around the site in pipework, or get carried in anything other than the flasks. Perhaps it's different once inside the labs though - especially if those tubes are part of the experiment.

That's where plumbing goes (1)

sirwired (27582) | about three weeks ago | (#47823691)

It's perfectly normal for plumbing in a commercial or industrial setting to be run underneath the ceiling. Burying stuff under a concrete floor is expensive to install, weakens the floor, and is difficult to maintain. A raised floor has limited load-bearing capacity and is also expensive vs. a suspended ceiling (if you care about aesthetics at all... you don't really need one of those either.)

You see plumbing buried in the floor of slab houses because it's cheap to install when the slab is being poured. This is infeasible in a commercial building which is expected to require changes during the building's life.

Really, an N2 line is no more dangerous than the hot water and/or steam lines running overhead in pretty much every commercial building. And in a facility that uses fuel, such as natural gas, those lines are going to run overhead too.

Re:I did it first ! (3, Interesting)

drinkypoo (153816) | about three weeks ago | (#47823741)

Seems kind of dangerous and that this stuff would be buried in the ground (as people would do with a tank of diesel, for instance)

Which people? Gas stations, maybe. Everyone else stores diesel above ground. It's more stable than gasoline so the thermal cycling isn't as big of a worry, and you literally cannot light diesel on fire. You need a wick of some kind to even produce massive volumes of black smoke, with very little flame. You can extinguish lit cigarettes by dropping them into a can of diesel. It's legal to gravity-feed diesel, but you legally have to pump gasoline. (Obviously not out of a jerrycan, but in terms of tanks.)

Re:I did it first ! (2)

tommeke100 (755660) | about three weeks ago | (#47823809)

So have you gained any super-powers?

Why do German scientists have fitting names? (4, Funny)

Opportunist (166417) | about three weeks ago | (#47823163)

Serious. Mr. Schwarzschild ("black shield") only kinda-sorta fits his radius, but Mr. Leidenfrost ("suffering frost") really takes the cake here.

Re:Why do German scientists have fitting names? (3, Interesting)

BetterThanCaesar (625636) | about three weeks ago | (#47823223)

Not only Germans. Have you seen the function named after Englishman Oliver Heaviside [wikipedia.org] , which has one light and one heavy side?

Re:Why do German scientists have fitting names? (4, Interesting)

BlueLightning (442320) | about three weeks ago | (#47823545)

This is known as "nominative determinism"; here's a somewhat amusing article [scilogs.com] from a couple of years ago on the subject.

Re:Why do German scientists have fitting names? (0)

Anonymous Coward | about three weeks ago | (#47823579)

> Serious. Mr. Schwarzschild ("black shield") only kinda-sorta fits his radius, but Mr. Leidenfrost ("suffering frost") really takes the cake here.

We've got it in America with people like the famous swimmer Diana Nyad [wikipedia.org] and the absolute best case of nominative determinism ever - Anthony Weiner. [wikipedia.org]

Darwin Awards (0)

Anonymous Coward | about three weeks ago | (#47823207)

I don't wish harm on anyone, but this moron is a walking Darwin Award billboard. It seems that even high-IQ people can still suffer from stupidosis.

Re:Darwin Awards (2)

SuricouRaven (1897204) | about three weeks ago | (#47823299)

There's a point where you are intelligent enough to play with the dangerous stuff, but not intelligent enough not to.

The ice bucket annoyance doesn't end... (0)

Anonymous Coward | about three weeks ago | (#47823273)

The ice bucket annoyance doesn't end until it causes a death. Those firefighters came close hitting those wires, but AFAIK, no deaths. This all reminds me of the "hold your wee for a Wii" fiasco. If the traditional ice bucket doesn't trigger a seizure followed by a heart attack, they'll keep amping it up with different versions like this. I'm waiting for the vitriolic acid variation. That oughta do it.

fuck you and the bucket challenge (5, Insightful)

ruir (2709173) | about three weeks ago | (#47823429)

Idiocracy was right on. The fucking bucket challenge is no better than ow my balls. Mod me down at will.

Re:fuck you and the bucket challenge (2)

webmistressrachel (903577) | about three weeks ago | (#47823559)

I would mod you up, but my recent post count isn't good enough, and I'm not being allocated any mod points. This should solve the problem; though not for you, unfortunately! ;-)

Re:fuck you and the bucket challenge (1)

jareth-0205 (525594) | about three weeks ago | (#47823607)

Idiocracy was right on. The fucking bucket challenge is no better than ow my balls. Mod me down at will.

Don't feel bad for yourself though, they're modding you down because you're using 'idiocracy' for no good reason, criticizing people who are doing good things.

Re:fuck you and the bucket challenge (3, Insightful)

Chris453 (1092253) | about three weeks ago | (#47823971)

criticizing people who are doing good things.

Actually no. Doing a good thing would be donating to charity. Most of the people doing this are just doing it because they saw it online or have a friend that did it and they want to be cool. Monkey see, monkey do. I bet a large number of the people doing the "challenge" don't even know the reason behind it. Instead of sharing stupid videos of clowns pouring water over their heads maybe we should be sharing videos of people writing checks to the charity. Of course that isn't as "exciting" for the ADD/ADHD generations.

Re:fuck you and the bucket challenge (1)

jareth-0205 (525594) | about three weeks ago | (#47824051)

There's nothing apart from your assumption saying that people aren't also giving to charity. Even if alot of them aren't, increasing awareness has its own benefits.

Re:fuck you and the bucket challenge (1)

ruir (2709173) | about three weeks ago | (#47824069)

If you ever had seen idiocracy you would have understood my post. Panis et circenses for the stupid masses.

Re:fuck you and the bucket challenge (1)

Anonymous Coward | about three weeks ago | (#47824147)

Doing good things would be donating to charity, while leaving the narcissism, self-aggrandizing, risky behavior out of the picture.

Re:fuck you and the bucket challenge (2)

BringsApples (3418089) | about three weeks ago | (#47823877)

I agree. It's called "the ALS ice bucket challenge" and it's meant to spread awareness about Amyotrophic Lateral Sclerosis (Lou Gehrig's Disease) and yet when I ask most folks about it, all they know is that "...ALS is when you dump ice water on your head". WTF? Also, the point of dumping the ice water on your head, as far as I understand, is to put one temporarily into the condition closest to that of one who is suffering from Lou Gehrig's Disease. Spreading awareness my ass, at this point, it's about being cool (no pun intended).

Re:fuck you and the bucket challenge (4, Insightful)

thegarbz (1787294) | about three weeks ago | (#47823989)

It's slacktivism at its best. Seriously the whole point of the challenge was do something that causes discomfort and donate a little or forgo the discomfort and donate a lot. Yet we have an internet full of loaded celebrities like Oprah (who has a freezer draw of ice in her kitchen, like seriously how much money does one need to make before they can install something like that in their house?) who then go and douse themselves.

So far the only one I have seen who did it right was Patrick Stewart [youtube.com] . Write a big check instead of putting yourself through the discomfort.

The financial results of the campaign would be amazing if it weren't for the fact that many of the people participating make more money in a year than was donated in the entire campaign.

T-shirt (0)

Anonymous Coward | about three weeks ago | (#47823645)

I've stuck my hand in LN once and the leidenfrost effect works fine. Don't to it too long though. I was wondering if it is not risky to do it with clothes on, the LN can maybe get trapped between clothes and skin?

clothes are the problem (1)

supernova87a (532540) | about three weeks ago | (#47823651)

Yes, LN2 will run off your skin and generally dissipate very quickly, but I believe you have to be very careful regarding clothing. Because the liquid will soak into and saturate fibers, which then are a real problem because you have a freezing liquid in contact with your skin which can cause burns.

who hasn't yet dumped a bucket of icy water... (1)

nospam007 (722110) | about three weeks ago | (#47823757)

Lots of celebrities. They used warm water with plastic icicles.

BTW a german politician was dumb enough to film himself doing it beside his Marihuana plant.

Obligatory (0)

Anonymous Coward | about three weeks ago | (#47823851)

Anyone who's taken a chemistry class, or at least watched the end of Terminator 2

Or seen the end of GoldenEye 007

I would prefer liquid nitrogen instead of water (1)

Tanuki64 (989726) | about three weeks ago | (#47823889)

Liquid nitrogen might be colder, but does not seem to have much heat capacity. When I had access to it, I 'played' a bit with it... who does not? Instant ice cream... putting finger in it... hand. No problem. Once I had a wet rag on the floor and I poured half a 5l Dewar with liquid nitrogen over it. The whole room was full of mist, but to my surprise the rag hardly got colder.
However, I would not try this with liquid helium. ;-)

Cool (0)

Anonymous Coward | about three weeks ago | (#47823953)

What a chilling story.

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