/sci/ - Science & Math

Convection within the body of water could be a problem, if there are any external heat sources. How would we keep the heat the water contains from leaking out into space, causing our ball of water to turn into a ball of ice?

I think eventually, there would be a rocky core formed from the meteorites that rained down from space.

When you pressurize a liquid, does it also raise the freezing point?

>>1077124
The rocky core would probably have a magnetic field.

>>1077127
http://www.wolframalpha.com/input/?i=phase+diagram+water

>>1077133
Neat!

Input....

>>1077119
Let it become a sun made of ice, and collide it with a sun of fire, of course!


...Sorry, I couldn't resist.

>>1077134
Wow, Wall-E on bluray looks amazing!

>>1077102

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Well, when you compress a gas, it also concentrates the heat stored in the gas, but if you can't compress a liquid I guess this isn't a factor. Seriously though, it seems like there should be a point when the ball of water ignites and becomes a sun. I guess that would be true fusion. You would have to have so much water that the weight of it literally collapses atoms. I think that's a lot of water.

>We could give it an atmosphere
This is where I lol'd

>>1077149

>>1077153
and?

>>1077155
And nothing, just a reaction shot. Thanks for the bump, though.

>>1077161
You're welcome. I'm happy to let the rest of the people here realize how shitty this thread is. Please read it.

>>1077145
And say that DID happen, what would happen to the very first H2O molecule to change? Would it jam a hydrogen atom into the oxygen atom? That seems most likely, it would add a proton and an electron which would make what, a fluorine atom that's short a neutron? And would that start a chain reaction?

>>1077184
According to my calculations, it would turn OP into a faggot.

>>1077169
I like it, I have a lot of questions though. I bet you are sad you can't answer any of them and so you mock me instead. I'm ok with that.

>>1077201
Yeah, I'm very sad that I can't figure out how useless a ball of water would be in space.

At extreme pressures water becomes solid. A kind of ice, but under such pressures its temperature could be in the hundreds of degrees celsius.

>>1077212
Storage, you fool. Every living thing we know of needs liquid water to survive. It seems kind of stupid for an advanced spacefaring race to store all of theirs in one place, which also just happens to be the place they shit.

>>1077169
>>1077149
Let us all join anon in a hearty lol because OP misused the word "atmosphere".

>>1077240
While I am thankful for your continued participation, I fail to see how I misused the term. Woudl you care to explain further?

>>1077267

...well... we know it would at least be this big.

mandatory:

I was born in a water moon. Some people, especially its inhabitants, called it a planet, but as it was only a little over two hundred kilometres in diameter, 'moon' seems the more accurate term. The moon was made entirely of water, by which I mean it was a globe that not only had no land, but no rock either, a sphere with no solid core at all, just liquid water, all the way down to the very centre of the globe.

If it had been much bigger the moon would have had a core of ice, for water, though supposedly incompressible, is not entirely so, and will change under extremes of pressure to become ice. (If you are used to living on a planet where ice floats on the surface of water, this seems odd and even wrong, but nevertheless it is the case.) The moon was not quite of a size for an ice core to form, and therefore one could, if one was sufficiently hardy, and adequately proof against the water pressure, make one's way down, through the increasing weight of water above, to the very centre of the moon.

Where a strange thing happened.

For here, at the very centre of this watery globe, there seemed to be no gravity. There was colossal pressure, certainly, pressing in from every side, but one was in effect weightless (on the outside of a planet, moon or other body, watery or not, one is always being pulled towards its centre; once at its centre one is being pulled equally in all directions), and indeed the pressure around one was, for the same reason, not quite as great as one might have expected it to be, given the mass of water that the moon was made up from.

>>1077309
To the center, yeah. 20 mile diameter is kinda small beans, though. I want big, jiggly spheres floating free. Jiggly...

>>1077335
>jiggly

>>1077343

>>1077325 fucking brilliant book

>>1077325
What's that from? It sounds familiar. I remember reading this one book where people lived on floating trees kilometers long, in a nearly weightless environment. Weird shit, I guess you shouldn't eat mushrooms before writing books.

>>1077369
That one is from Algebraist. Yes, it is a brilliant book.

The one with trees is, I think, Integral Trees. IIRC it happens in a torus of gases in orbit around a quiescent neutron star.

Briliant book too, though I consider it more social sci-fi.

>>1077384
Yeah, that was it. I didn't find the series engaging enough to finish. Thanks for the Algebraist though, I'll check it out.

>>1077408
No problem. I'm always happy to divulge information about awesome books.

>>1077325
> it had been much bigger the moon would have had a core of ice, for water, though supposedly incompressible, is not entirely so, and will change under extremes of pressure to become ice

I call bullshit. Raising the pressure of water INCREASES its temperature, so you'd just get crazy convection in a large enough sphere of water - the hottest water in the centre would convect surfacewards. Sure, it'd be difficult as the centre would be at zero-gravity, so I suppose thermal conduction would have to transfer heat out to a given radius where convection could then begin. My ballpark prediction is that the water sphere would have a crust of ice, divided up into semi-regular hexagonal sections due to convection. It'd look a bit like a soccer ball. If the sphere was big enough, I suppose you'd eventually get fusion occuring in the core.

How far is our hypothetical water-sphere from the sun? That would have a big effect.

>>1077564
I think you have to actually compress it, not just pressurize it, to increase temperatures. As anyone with an air compressor knows, the output line after the piston will burn the shit out of you, but that's a gas being packed into a smaller space than before. You can only pressurize liquids, and I do remember hearing that massive amounts of pressure restructure the molecules in a liquid into rows, like that of a solid.

Also, the bottom of the ocean isn't exactly hot, if you discount the thermal vents. The earth is still molten inside because the heat is trapped there, it's not from the pressure of the crust's weight. Crust is a gross word to type. Crust. Ok, it turned into nonsense. Crust, crust crust.

>>1077606
If you pressurise water, the molecules will be colliding more often, so that have more thermal energy. I suppose this doesn't have a noticeable effect on the temperature at the bottom of the ocean because heat gets convected upwards.

>>1077639
When you compress a gas, the molecules collide more frequently, but why would that happen to a liquid? There are not more molecules in a given volume after you pressurize the liquid, although I could imagine that the molecules take more effort to push each other out of the way as they travel. I guess that would qualify as friction, which generates heat. Like if you had ahold of one ball on a kids' ball pit, and you are dragging it laterally through the pit, and then someone puts a lid on the pit and stands on it, with their weight supported by the balls, and the you tried to drag that ball through the other balls, it would be harder.

>>1077564

Surely the effect would be much like that of the tectonic plates and magma on earth, only instead of magma, water and instead of plates, ice.

I should imagine, if it were close enough to any celestial body, it would have a changing tide which would warp the 'planet' into an oval.

I would also imagine it would be pretty humid and stormy, depending on how close it is to the sun.

This is all, of course, speculation.

>>1077661
>Like if you had ahold of one ball on a kids' ball
>whatthefuckamIreading.jpg

>pit
> *whew*

sage for stupidity

>>1077666
Something like... this?

>>1077666
Yeah, storms are fine, it shouldn't disrupt anything. You would have to have some serious heat controls on the thing though, solar flares would add heat in higher quantities than usual. I would say keep it behind another planet but I see no way to stop heat from radiating away, so if you wanted to keep it liquid it would have to stay near a star.

Maybe a spherical shield, with reactive translucency, but I was trying to avoid a container, because why not just build a huge-ass tank and avoid the atmosphere altogether. And fuck it, what if the thig DID freeze? It's still there, and hell, now you can land on it!

>>1077687
If you built a tank, it may literally have a greenhouse effect.

It sounds like an awful lot of fucking around, where the state of the water is balanced on a knife edge.

More to the point, where would the OP source such a large amount of water? And how would he get it out there in the first place?

It seems like an awfully long way to get a drink of water from the kitchen sink.

>>1077695
Just speculation, I guess. Hell, maybe we will learn how to synthesize water from other H and O containing materials, like the water that comes out your car's tailpipe gets made by the combustion process.

OP, out. Time for tv.

>>1077141
a sun made of ice of fire huh?