What is Digg?82 Comments
- nipterink, on 10/12/2007, -1/+59not even pretty almost entirely thoroughly?
- bbrosemer, on 10/12/2007, -6/+61This guy just copied step by step what happened on mythbusters and posted on a website and said coke instead of beer. Mythbusters cool copying it and taking it as your own... Not...
- A2Ska, on 10/12/2007, -7/+55Beer would be better than coke, but if you prefer...
- JC-Sharp, on 10/12/2007, -5/+43Sweet, Something that was covered by mythbusters long ago.
- lickmygiggle, on 10/12/2007, -0/+29I wanted the buried in gasoline-drenched sand set aflame to work so badly...
- Aang, on 10/12/2007, -3/+30This is news? Hasn't anyone made ice cream before?
- admirabumblebee, on 10/12/2007, -0/+24This is why I keep a big tub of salted ice water in my kitchen at all times.
or do I... - debtman7, on 10/12/2007, -3/+15
Beer freezes just fine... Actually the water freezes just fine, the alcohol will precipitate out and won't freeze, but for all practical purposes you'll have a frozen beer. - Philodox, on 10/12/2007, -0/+12Damn Fahrenheit, I was wondering why somebody would have coke at 89c.
- dpcamp, on 10/12/2007, -0/+11hmmm i've been trying the sand/gasoline method... no wonder i always burn my tongue/face
- mwolfzorn, on 10/12/2007, -1/+10Not just something that was covered by Mythbusters, the article actually is based upon an answer by Adam Savage (one of the MythBusters)
P.S. If you read the summary don't worry about reading the article, the only thing extra if you read the article is a lame joke about gasoline - dootisterhans, on 10/12/2007, -0/+9smaller pieces of salt will have more surface area
- ray901, on 10/12/2007, -0/+9When we used to go to rugby games we would take a cooler and instead of ice we would freeze some beer cans. It kept our regular beer cool and when we ran out we could drink the 'ice'. Beer Freezes!
Beer that has been previously frozen tastes like absolute ***** and will ruin the beer.
Later when they banned bringing beer to the rugby we would get some oranges and inject them with brandy or rum and freeze them. Good to munch on on a stinking hot day.
eerrr... enough of my life story.... - Canthiar, on 10/12/2007, -0/+8@bbrosemer
The post was written by Adam Savage. The original is here: http://ask.metafilter.com/mefi/52074#786647 - Havs, on 10/12/2007, -2/+9That's the best story description I've ever seen on digg. I didn't even have to read the story! So much better than "title says it all!".
- inactive, on 10/12/2007, -4/+10Yeah, the whole point of the mythbusters segment was to find the fastest way to cool beer. This method came in second to just spraying the cans with a fire extinguisher. It only took a few seconds but it's not as practical as salt water and ice.
- ModernTenshi, on 10/12/2007, -0/+4Excellent. And they all said I was insane for inventing my self-tumbling, water/ice/salt coolant Coke machine . . . .
- dkleehammer, on 10/12/2007, -0/+4@ whiskeymb
The alcohol content in beer will stop it from freezing, however, it will turn into a slushy mix of frozen water and alcohol. - adml_shake, on 10/12/2007, -0/+4I'll stick to my fire extinguisher method :)
- Pattyo13, on 05/14/2009, -1/+5agreed - beer freezes. if you don't agree, put a can of beer in the freezer.
don't blame me for any mess involved because you didn't think it was true (trust me) - evildeadman, on 10/12/2007, -0/+4@john570:
Putting salt in the ice water results in freezing point depression. Rather than the ice melting and the water temperature decreasing steadily, the salt water surrounding the ice will melt it, while bringing the temperature down much more rapidly without freezing. One of the few useful things I learned in Chemistry.
edit: looks like a lot of people were on the same page at the same time. - marlinspike, on 10/12/2007, -0/+3Can someone please explain the scientific reasoning behind why adding salt to ice water reduces the time the Coke can takes to chill?
- griz, on 10/12/2007, -1/+4No, it is a direct quote from Adam Savage of Mythbusters.
- pero69, on 10/12/2007, -0/+3WTF are you talking about?? this has nothing to do with the surface area of the salt. Salt melts the ice into water. the water is still at freezing temperature and the WATER can now cover more surface area of the can because it's not a bunch of flat chunks of ice.
- scrimaxinc, on 10/12/2007, -1/+4@whiskymb
Untrue..... the water in the beer will still freeze, just won't freeze solid. You should switch from whiskey to slushy beer, its scrumptrulescent.
edit: Dammit debtman beat me. - alphacorvus, on 10/12/2007, -2/+5Did this last night with a 24 pack of Molson Canadian.
No freeze, just cool, tasty beer. - mkayatta, on 10/12/2007, -0/+2We have:
deltaT = K x i x m where K for water is 0.52, i for NaCl is 2, and m is molality. Thus in order to lower the temperature by say, 5 deg C, we need:
5=0.52 x 2 x m. --> m is about 4.8 which is also about 5M. That's a pretty good amount of salt, but not that hard to do. That's about 0.6 pounds of salt per quart (5molar = 292 g/l) - bbrosemer, on 10/12/2007, -0/+2@cmscott
Read the article not just the blurb! - JRumph, on 10/12/2007, -0/+2I, for one, can attest that beer will in fact freeze. On one night in my naiive college days of yesteryear (ok 2 years ago) I decided a REALLY cold beer would be great, so I put a can of Milwaukee's Best (only the best for me) in the freezer. Coming back a few hours later, I was expecting to have the coldest, greatest can of beast I had ever had.
All I found was that I had slushy beer splattered throughout the entire freezer. The water in the beer froze and the can exploded just like what happens with pop. Alcohol won't freeze, but beer (especially beast) is mostly water. - Aumaden, on 10/12/2007, -0/+2Salt, water and ice is ok, but your minimum temp is ~-20c (~-6F). I wish they had tried acetone and dry ice - minimum temp is ~-78c (~-105F).
Especially since they like things that go boom:
http://jchemed.chem.wisc.edu/jcesoft/cca/cca0/MOVIES/ICEBOMB.html - K5Fury, on 10/12/2007, -0/+2If you want to get a coke cold fast, spin it in ice for about 30-45 seconds. That'll make it cold...It works for bottles too but not as well...Remember the "Chill Wizard" everybody??
- ImOscar, on 10/12/2007, -2/+4Whiskeymb is just saying it won't freeze in ice water, which is true. Or pretty almost entirely thoroughly correct, if you will.
- khag7, on 10/12/2007, -1/+3Mythbusters ripoff? More like common knowledge ripoff
- pureliquidhw, on 10/12/2007, -0/+2salt water has a lower freezing point, thus it can be colder, thermal diffusion happens faster when temperature differences are higher so the drink cools faster.
//edit: beaten - pcdel, on 10/12/2007, -0/+2How much salt does it take?
- mkayatta, on 10/12/2007, -0/+2good call, looks like I looked up the Kb for water, not the Kf. Good catch
Kf = [(Mw)RT^2]/deltaHf
Kf = 1.858 - nmathew, on 10/12/2007, -0/+2@ mkayatta I agree with your math, but not your Kf value.
I'm feeling lazy, so here goes for some cheapness:
Landolt-Bornstein, 6th Ed., Zahlenverte und Functionen aus Physik, Chemie, Astronomie, Geophysik, und Technik, Vol II, part IIa, Springer-Verlag, 1960. Pp 844-849 and 918-919.
says
Kf(°C/M) is 1.858 for water
Freezling point depression (Delta T) = Kf*molality of solute.
Since salt breaks down into Na+ and Cl-, both ions count in this formula, so we're going to treat NaCl (salt) as double it's actual concentration in this formula.
So, now we're going to use the formula Delta T = 2*Kf*M since we're counting salt twice.
I get about .8 moles per liter, which is about 46.75 grams per liter, unles I typed something into MathCAD wrong.
Office of navel research says that 1000 grams of sea water contains 35 grams of salt on average. A rough looks implies that we're not all that more concentrated than seawater.
At room temperatures, you can dissolve about 6 moles of NaCl in water. That number decreases as the water is chilled. - MaddDog, on 10/12/2007, -0/+2Salt water freezes at a lower temperature than normal water. Thus, a bucket of salt water could have a temperature of -3C. Whereas a bucket of water cannot be colder than 0C (because it will freeze otherwise).
You want ice because it will maintain the temperature of the water at -3C while the coke/beer is cooling. (as long as the ice is colder than -3C) - sublimevolution, on 10/12/2007, -0/+1isn't it called a "cooper cooler" now
- lostradamus, on 10/12/2007, -0/+1...or live in Canada.
- capran, on 10/12/2007, -0/+1"Whatever you do, do NOT bury the can in sand, pour gasoline on the sand and set the sand on fire. That won't do anything."
WTF?! Where the hell did THAT come from? - john570, on 10/12/2007, -0/+1So salt speeds up the cooling process. Does anyone know why? Just curious.
And MarlinSpike asked the same thing below.... Didnt see it. - d0b33, on 10/12/2007, -0/+1Yep, seen this on mythbusters...
@ lickmygiggle
"Buried in gasoline-drenched sand set aflame" should actually be tested @ the ocean shore...
theory is that the heat will evaporate the ocean soaked soil from beneath rapidly cooling the desired object...
not that I believe it off course ;) - ssb8mao, on 10/12/2007, -0/+1hooray for colligative properties
- felchdonkey, on 10/12/2007, -0/+1@nmathew
I want to join the Office of Navel research. Can I research any navels I want? - doublemazaa, on 10/12/2007, -0/+1How about the jet powered beer cooler? That's a lot more fun than ice and salt.
http://www.asciimation.co.nz/beer/ - mkayatta, on 10/12/2007, -0/+1Does anyone realize how much salt you have to add to reduce the boiling point by 3 deg C? Anyone want to work out the calculation (hint, it's a crapload, which may not be dissolvable in water)
- JavaApe, on 10/12/2007, -0/+1When I worked in a chem lab we had a cute little chamber hooked up to the liquid CO2 that was just about the right size for a pop can. Add the pop can, lock it down, open the C02 nozzle, and in about 30 seconds you had an ice-cold soda with a thick coating of dry ice on the outside of the can! Now I want one for home!
- felchdonkey, on 10/12/2007, -0/+1Read the article. Adam Savage of Mythbusters wrote it. Sorry if not everyone watches as much TV as you do.
- Antha, on 10/12/2007, -0/+1I have exploded many a can of PBR in such a fashion in my younger days, before I discovered my true love: Bourbon.
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