What is Digg?165 Comments
- gcnaddict, on 10/12/2007, -26/+649I'm assuming I already know which video this is, so I'll post what I know based on that:
The water isn't being disturbed. Undisturbed water in it can become slightly cooler than freezing and still remain a liquid. The second the water is disturbed, the disturbance jostles the water molecules, forcing them into the necessary hydrogen bonds needed for the bottle to turn into ice.
I know this because I tried it. Get an *unopened* bottle of spring water and leave it in your car's trunk overnight on a night that's slightly below freezing. On the next day, take the bottle and shake it while it's still a liquid. It should freeze.
(and of course, I get dugg down for trying to help. Thanks.) - pyrolyte, on 10/12/2007, -14/+210its supercooled. so your freezer.
- SWiG, on 10/12/2007, -4/+78We all know that there was already some Ice-nine in there. I hope it didn't get out into the wild!!
- valis, on 10/12/2007, -7/+71Ice 9
- optikalblitz, on 10/12/2007, -2/+56after some clicking...
a how-to: http://johnmudd.infogami.com/blog/3j1k - MasterChi, on 10/12/2007, -6/+41I so can't wait till digg gets a video section so videos won't just be posted anywhe........ohhh.
- Vigrant, on 10/12/2007, -12/+40Where can I get some??
- NickMilne, on 10/12/2007, -7/+34It clearly works by dark magic of some sort
- bIuebonics, on 10/12/2007, -5/+31who dugg down pyrolyte? (edit: well, looks like he was dugg up in the time i took to post) it's actually called supercooled water. it's liquid water whose temperature is below freezing point. there's also superheated water. where, naturally, the liquid water's temperature is above the boiling point. supercooling water can be accomplished with your freezer just as superheating water can be done with a non-turntable microwave (caution: superheated water can be extremely dangerous).
http://en.wikipedia.org/wiki/Super_cooling
http://en.wikipedia.org/wiki/Superheating - npsken, on 10/12/2007, -7/+25Take distilled water and lower its temperature to below freezing. Agitation or pollutants will then make it freeze. Notice in the video the person was careful when beginning to poor it out.
- arktos, on 10/12/2007, -2/+19Heres the exact same video on youtube - http://www.youtube.com/watch?v=fSPzMva9_CE
its linked from the wikipedia article on super cooling, down at the bottom with this description:
"Video of Supercooled Water A video of −21 °C supercooled water poured into a bowl, instantly turning to peaks of slush." - optikalblitz, on 10/12/2007, -7/+24Awesome but... no tech info o_O
what a tease - krinthekuz, on 09/16/2008, -3/+19this is why you should NEVER freeze or microwave distilled water. it is pure enough that the temperature can get below the freezing point (supercooled) or above the boiling point (superheated) without changing state. however, when disturbed, the air adds enough impurities to make it instantly freeze or boil over.
there are a ton of videos on youtube of supercooled liquids (a beer bottle being tapped after it's been sitting in the freezer too long). also, if you take distilled water and microwave it for a few min, it won't boil over, but then you drop a spoon in it and it will violently boil over.
this is also the reason why so many people who fry turkeys for txgiving end up burning themselves. cooking oils have rather high smoking points, and fresh oil is usually pure enough to superheat. they drop in the turkey and the disturbance causes 500+ degree cooking oil to violently erupt from the drum, which gets on people in addition to the burner (which causes a fire). - bmartin, on 10/12/2007, -22/+37"Pure water doesn't freeze as easily. Throw a bottle of distilled water in the freezer and see what I mean."
http://scienceworld.wolfram.com/chemistry/FreezingPointDepression.html
The more solute you put into a liquid, the colder it has to be to freeze. - blobzorz, on 10/12/2007, -6/+20Baby don't hurt me.
- NSMike, on 10/12/2007, -0/+14The problem is, the new design of digg separates videos from the rest of the front-page topics. When it was part of the regular topics, I remember nearly every video hitting 900+ diggs, usually pretty quickly. Most videos are lucky to get 500+ diggs now. People want their videos to be seen. I know when I browse through the news stories, I don't bother with the videos that much anymore. And sometimes I remember, "Oh, there's a videos section too!" and I go check it out.
- S1ngular1ty1, on 10/12/2007, -1/+13In order for something to crystallize or freeze, you need nucleation sites for the new phase (i.e. ice) to form. Phase fluctuations occur as random events due to the thermal vibration of atoms. An individual fluctuation may or may not be associated with a reduction in free energy, but it can only survive and grow if there is a reduction. So water periodically changes to ice at a molecular level do to random fluctuations of its atoms. These microscopic ice particles can only grow to form crystals if they become large enough to make the phase transition easy enough for the rest of the liquid by lowering the interface energy between the ice phase and the water phase. When this occurs it is known as homogeneous nucleation because no outside particles are used to initiate nucleation.
You see, there is a cost associated with the creation of a new phase (such as ice crystals), the interface energy, a penalty which becomes smaller as the particle surface to volume ratio decreases. So as the radius of the microscopic ice particle clusters increase or as the radius of imperfections (such as dust, bumps in container walls, air bubbles, etc) increase, the likelihood of the water to freeze (I.e. to form ice crystals) increases. If there are no imperfections, as mentioned before, the likelihood of ice crystals forming in water is small even at temperatures below 0 °C. Water that is cooled below 0 °C is known as supercooled water. Any agitation to a cup or bottle of supercooled water will cause clusters of microscopic ice particles to form in the liquid that are larger than the critical nucleation radius, Rc, and ice crystals will begin to grow in the rest of the liquid do the lowered interface energy between the two phases. Supercooling is usually only possible with water that is free of impurities (or purified water). Impurities lower the energy required to form crystals and act as nucleation sites where the water will begin to freeze usually at 0 °C at standard atmospheric conditions. When ice crystals begin to form at impurities this is known as heterogeneous nucleation. - Amorrn, on 10/12/2007, -5/+16Now let's see him turn it into wine.
- Godel, on 10/12/2007, -4/+14@bmartin
Yes but adding solute provides condensation points. That prevents the water from reaching the supercooled state. - spudnic, on 10/12/2007, -3/+13I think it was a joke.
- Mytzylplyx, on 10/12/2007, -13/+22"IDEA:
Diet Coke + Instant Ice + Mentos = Nuclear Reaction??"
lol, awesome idea. - skyfire1, on 10/12/2007, -2/+10I would pour it over my cat. Then I would have a ice cat.
- inactive, on 10/12/2007, -0/+8@mikewitt & iamjames
Sodium Polyacrylate Reacting with water:
http://unitednuclear.com/sodiumpolydemo.mov - stealth45, on 10/12/2007, -5/+11I thought they might have used sodium polyacrylate.
Google it. - cr3ative, on 10/12/2007, -0/+5Indryd -
In reference to your delightfully polite Point 1,
"The freezing point of water is 0°C (32°F, 273 K). In the absence of nucleators water will supercool to −42°C (−43.6°F, 231 K) before freezing. But in the presence of nucleating substances the freezing point of water is the same as the melting point. Nucleating agents, such as dust, are commonly present in the environment, which is why rain water and tap water will normally freeze at the melting point of water."
While others may have not articulated their points very well, they are in essence correct. - redheadguy719, on 10/12/2007, -1/+6this looks kinda like something we did in chemistry with "Supersaturated Solutions." You can heat a solution so that more solute will dissolve. When it cools it retains that same amount of solute, but when you add a crystal of the solute or, what we did, pour the supersaturated solution onto a crystal of the solute, the excess solute begins to leave the solution and crystalize. It looked like exactly the same.
- zephris, on 10/12/2007, -1/+6Google is God. Google knows all. Use Google. It will help.
- JSchroeder, on 10/12/2007, -5/+9I agree. I am a science teacher and sometimes use this substance for a demonstration. It is used in diapers and absorbs a massive amount of water. Put some in the bottom of the container and the water will instantly gel up.
- darklord5907, on 10/12/2007, -0/+4It is supercooling.
Video by what looks like the same people, with the same effect.
http://www.youtube.com/watch?v=4g1BDpU7ZQo - pbaehr, on 10/12/2007, -0/+4@harashi:
No, I'm pretty sure they really want an ice cat.
Just think of the possibilities! They were clearly not kidding. - Trebis, on 11/04/2007, -0/+3Well, everyone....I think we just fixed global warming. Good job.
Step 1: Fill enormous bucket with water
Step 2: Turn it into MAGIC science-defying water
Step 3: Pour out into the ocean
Step 4: ???
Step 5: Profit!!! - TIEpilot501, on 10/12/2007, -5/+8Finally, it looks like scientists are making progress in developing the Ice Beam.
- diggimator, on 10/12/2007, -0/+3Youtube has something similar:
Corona Ice Freeze
http://www.youtube.com/watch?v=4i11hVEVPdM
I was just reading about this at a bookstore yesterday. The trick explained in the book used a special liquid... basically just a science experiment. - Trebis, on 10/12/2007, -3/+6samadam:
He was kidding.
Just lettin' you know. - reconbot, on 10/12/2007, -0/+2Dont hurt me, no more.
- stave, on 10/12/2007, -0/+2Dugg up for being the only person to credibly back up his opinion.
- GarethSaxby, on 10/12/2007, -0/+2redheadguy719 is correct; a very similar effect can be gotten from creating a fully saturated salt solution, and then pouring it onto even more salt (It doesn't have to be NaCl either). The crystals come out of solution, creating a effect that's very similar to ice. It's even capable of freezing into a beaker, much like the water bottle in this. I'm not sure that this is the method used, as others seem to have put forward some other equally possible methods, but all the same, salt over saturation is still a possible means that most likely relies on very similar principles.
- md10md, on 10/12/2007, -0/+2@emjaymj
Salt decreases the freezing point but actually increases the boiling point. The pasta boils faster because the water is hotter. Solutes just spread out the gap between the freezing and boiling points in both directions. - WaterDragon, on 10/12/2007, -1/+3Hey, maybe you can use all that water to put out the flame!
- Smokeymcpot, on 10/12/2007, -3/+5I feel stupider for having read that.
- aridese, on 10/12/2007, -1/+3It could also be a supersaturated solution of something like sodium thiocyanate (not that sure on the name).
What you do is take a beaker of water, and dissolve the sodium thiocyanate (photographer's hypo) in it. There comes a point when no more hypo will dissolve in the water (think of salt or sugar in your tea). But if you heat up the liquid, more hypo will be able to dissolve. If you're careful, the hypo will remain dissolved when the liquid cools down. This is a supersaturated solution -- when a lot more stuff is dissolved than normal.
The catch is, if you jostle it or add some more hypo into it, it will instantly solidify. If you leave a little solid hypo in the bottom of the bowl, then if you're sneaky about it pouring the liquid over the solid hypo you can have it crystallize just like in the video.
Wikipedia it for more. - zephris, on 10/12/2007, -1/+3I can read your post. It's still there. You're straight up saying that that it's not water. The ONLY way you could know that it's a chemical "closely related to vinegar" is if it were the ONLY way to have that reaction and if it were the ONLY thing/liquid that can do that, implying that water CANNOT do that (when in fact it can). I read what you said. And that's exactly what you meant to say. I'm not saying there isn't another chemical reaction that can do that, but claiming to know something for a fact went you weren't even there and you "have a chemistry book" doesn't mean that your guess is correct. So, like I said...it's not necessarily this other chemical that you mention. Damn, just admit that you might be right and wrong at the same time.
- arcooke, on 10/12/2007, -0/+1Learn how to give your articles a proper title and description and perhaps people will pay attention to it.
- nazsco, on 10/12/2007, -2/+3Has to do with the fact that molecules put some energy in not changing their current state. this happens to boiling water, releasing gases from liquids and freezing.
The easier and more obvious way to observe this is to put some clear gasified liquid (soda) in a glass. You will see that on the microscopic imperfections of the glass, the gas gets released. No matter how you shake the glass, you notice that the bubbles usual forms at the same places, and always on the wall or base of the cup. never on the middle of the liquid.
The gas gets released because the concentration of CO2 in the ambiente is smaller then in the liquid, as your high school chemestry classes told you. But it doesn't happen right away, you need some concentration point to unit the molecules until they gain strenght to move out.
now, i'm no expert, and i don't have a clue about the names of this in english. go find your self. - KismetSky, on 10/12/2007, -1/+2How to:
Need:
Smirnoff Ice
Freezer
Freeze the Smirnoff in the freezer for at least a day.
As soon as you open the bottle, start pouring slowly.
I do this pretty frequently to make a slushy alcohol drink, it's yummy. - Travisx2, on 10/12/2007, -0/+1If any govt types know something about this more than we do, and it IS Ice-9, Please Take off and Nuke the Site from orbit.. It's the only way to be sure!
Really. - selrahc, on 10/12/2007, -1/+2How do you profit from killing everything in the ocean?
- Magadass, on 10/12/2007, -0/+1Ummm this is caused by nucleation, the water is taken below the freezing point. Ice cannot form without a single ice crystal for the ice to form off of, all crystals form from a seed crystal. So yeah this was on digg before, just look up the wikipedia article, here is a snippet:
"Pure water freezes at −42°C rather than at its melting temperature of 0°C if no crystal nuclei, such as dust particles, are present to form an ice nucleus." - shinynew, on 10/12/2007, -1/+2you can also superheat water in a flawless container.
and as soon as you touch it it explodes. -
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