/sci/ - Science & Math

Being sceptical and cautious is a good character trait.
However, in this instance I think that it is probably genuine.
I do not see how this will break the glass.

Try it, what's the worst that could happen?

The difference in temperature between the contents of the bottle and the ice cold paper wrapping will cause it to explode with shards or razor sharp paper slicing you to shreds

well water expands when it gets cold, and the paper towel is wet.

>>4952875
It rapes and murders your family!

Put a bowl around it, test it.

Was that really so hard?

I can see the paper towel freezing solid, fucking with the glass bottle. There's already a shitton of pressure going on by sticking a sealed glass bottle in there.

use a plastic bottle thats open and try it.

>>4952880
That will not happen.
The paper starts off as only wet. It is not ice cold.
The bottle and the paper will cool together.

>>4952884
I think it will peel away with no problems.

>>4952884
Actually, yeah.
I remember once I accidentally froze a 2 litre bottle of soda almost solid, when I took it out the cap blew off due to the pressure

>>4952894
You should not freeze soda.
The pressurisation was due to the beverage being carbonated.

If you increase thermal conduction and evaporation like using a wet paper towel the content should cool much faster.

tldr; it works

Will plastic bottles work as well? With glass being a better conductor of heat and all.

I've never actually understood why liquid expands when frozen. Solids are supposed to be denser, therefore more compact, right?

>>4952947

In waters' case, it's primarily because there is a strong inherent tendency to form a complex network of hydrogen bonds, whereas each hydrogen atom is positioned in a line between two oxygen atoms. This causes a very "open" solid crystalline structure, which causes the ~9% expansion when water is frozen.

>>4952947

Hydrogen and oxygen form very strong polar bonds. When water freezes, the crystal lattice holds it further apart than hydrogen bonds pull it together. This is not the case for almost any other liquid.

>>4952968

This explains it well

>>4952968

>the crystal lattice holds it further apart than hydrogen bonds pull it together.

Eh, no.

>>4952976

No

>>4952947
This is only the case for Ice I. It's just a specific crystal configuration. Kind of like how carbon can be coal, diamond, carbon nanotube, and buckyball, so does Ice have several different forms. These are just referred to as Ice I, Ice II, Ice III, etc.. All of the other ones shrink, are denser than water, and require higher pressure/lower temperatures to form.

Kind of funny how Ice I being an oddball is what makes it so useful. Could you imagine if you put ice cubes into your drink and instead they sank to the bottom where the cooled liquid already was?

>>4952985

lulz

I never said he was correct, I just said he explained it better.

>>4953076

>I never said he was correct, I just said he explained it better.

I think its a simpe case of the water in the towel freezing and sucking energy out of the bottle for the latent heat.

>>4953100
>freezing is an endothermic process.
No.

>>4952883
The man asked a simple question. That's all, and it's easier to ask someone who may know more than you on a subject than to be a bumbling idiot and stumble into a situation that you aren't sure of.

The one thing I hate about /sci/ is the population of bitter, elitist manchildren.

i do this often, it's a small tip offered by experienced hospitality staff and those who host often. allows you to cool a bottle of anything down to a few degrees in a few minutes, nothing more.

Wrapping drinks in wet towels etc. is a classic way of keeping them cool. The water evaporating will take a lot of thermal energy,

I don't see how the wet towel will help.

It could be under the assumption that the beverage starts off warmer than the water in which the towel is wet. Which I guess is a reasonable one.

I keep a small jar half filled with water in the cooler. Plop a can of coke into the already cool water for rapid chilling. I've considered putting salt in the water and putting it in the freezer, but then I'd risk frozen coke.

Keep.a bowl of salted water in freezer.

Stick bottpes in bowl, will cool down fastest

>>4953105

Surely by saying its endothermic you just agreed with me.

>>4953130
>>4953130
that pic should say endothermic.

Who really gives a fuck?
Just Mythbusters that shit! Ice+saltwater that shit nigga!

It won't crack the bottle, not in a few minutes. What happens is that the dry air of the freezer promotes rapid evaporation of the water on the paper towel, quickly and efficiently cooling the beverage.

>>4952866

OP, I wouldn't do it, the combination of hydroxycellulose in the paper towels and water, when it drops sharply in temperature, catalyses a rearrangement reaction that generates a lot of dioxane, which is carginogenic.

The water in the towel is a better carrier of heat than the air in the freezer thus it moves heat out of the bottle faster than cold air alone would.

>>4953142
http://en.wikipedia.org/wiki/Exothermic
Are you a troll or an idiot?

I never tried this but I did try putting water, ice and salt in a bucket and a few cans of soda works pretty well

>>4953596
I dont think op plans on licking the,bottles

In theory evaporation stops when the wet towel freezes so it will always be just above freezing.

>>4952947

>>4953592
this is the only explanation which I believe

>>4952947
ice forms a crystal structure

>>4952866
how the fuck would that break the glass??
it obviously actually works, dont be so fucking paranoid

>>4953703
EK, I am disappoint.

>>4953705
orly?
w/e, i'll fucking try it then. we'll see if it smashes

>>4953722

First thing they tought us in cooking school was to keep 2 rags on our apron. And 1 rag was only for whiping things,off, and the other rag was only for carrying hot stuff.

This way you dont accidentally use a wet rag for carrying hot stuff.

>>4953703
>>4953717
go away.

>>4953705
Go to bed Rhys.

>>4953703
Why the fuck do you have to be such an aggressive cunt all the time? He's asking a question and it's sciece, fuck off. Not to mention that since he got the image off of 4chan he has every reason to be "paranoid".

Polite sage for off topic.

http://www.nasa.gov/multimedia/nasatv/iss_ustream.html

NASA CAM

have you guys seen this? is so cool i didn't know it existed until recently. A series of cameras broadcast live from the ISS. it feels like youre in a fucking science fiction movie.

>>4953733
well i just took mine out the fucking freezer and it seems fine to me! yeh, in fact im pretty sure it HAS cooled down faster, so image is totally legit.

shows what you know!

>>4953739
>Anecdotal evidence.
EK confirmed (for the thousandth time) for not knowing shit about science.

Paper doesn't have the tensile strength to collapse a bottle circumferentially.

>>4953760
Yeah but I think OP is worried about the bottle being extra brittle from the cold.

>>4953753
i fucking JUST DID IT RIGHT FUCKING NOW!

PROOF, nigga

>>4953761
thats why you only leave it for a few minutes. its faster than putting it in the fridge. you dont freeze bottles.

>>4953766
I have to ask you a question, EK.

>>4953753
EK is a shitposter, but actually conducting the experiment is a pretty scientific thing to do. Conclusions shouldn't be drawn too hastily though since the experiment probably lacks rigor and a large enough sample size.

>>4953739 in fact im pretty sure

>fact
>pretty sure
>no evidence
>science

>>4953779
to be fair, i didnt wait the full 15 minutes, it was more like half that
but im thirsty, yo.

>>4953769
then why didnt you?

>>4953739
Derp EK. Derp. You do realize why OP was concerned? You do realize that conceivably the rag could freeze and expand, shattering the bottle already under tension? Regardless of whether that can actually happen, you should be able to see this and respect where he's coming from.

Instead what your input amounts to is
>your and idiot

>>4953598
What carries heat off the towel, genius?

>>4953142
No. It shouldn't. The net effect of an exothermic reaction is heat released into the environment.

>>4953782
did you want me to get some fucking thermometers, do it with 2 bottles, and just paper-up one of them?
i dont really care! alright!
i just wanted to see if it fucking shattered the glass!
it didnt

>>4953788
When are you going to learn limits?

>>4953793
>You do realize that conceivably the rag could freeze and expand
expanding aint a problem, if it CONTRACTS then it might crush the glass., but come on, its fucking paper!

"Instead what your input amounts to is
>your and idiot"
i never said that, i just said he probably shouldnt be so paranoid!

>>4953793
Circles only expand outward


I forget why, but its ,true

>>4953810
Sounds somewhat plausible.

I was imagining it first freezing tight and then expanding in all directions from the added volume of water.

>>4953810

Except no.

>>4953840
Except yes

>>4953894
But that's wrong you retard

It's not going to explode, but it's also not going to make the drink cold. It'll only get the outside of the bottle/can cold so it feels like it's cold before you open it. Take a sip and it'll be warm as piss still.

>>4953980
Its the exanding hole paradox

Real science is humble. Just my two cents.

Relativity is more about neuroscience than anything else. It describes how we understand time and process spatial information by interfering with photons. Illusions at light speed. It has nothing to do with each physical body.