/sci/ - Science & Math

It's just a 14 psi pressure drop. You won't explode, but you'll pass out and die fairly soon.

>>1770281

I was thinking less about exploding and more about freezing solid. But you're saying it is survivable to some extent?

>>1770281
>but you'll pass out and die fairly soon.
this, however if you exhale, your lungs wont explode. all your orphases will evaporate and UVs from the sun will burn. however you'll live for a good 15 to 20 seconds before passing out.... if you hold your breath exhaled that is.

http://en.wikipedia.org/wiki/Vacuum#Effects_on_humans_and_animals

>>1770288

Space doesn't work that way.

The temperature issue is something else entirely of course - out of the sun you'd freeze solid but still long after you died from asphyxiation.

Not a bad description - http://uk.answers.yahoo.com/question/index?qid=20080705041942AAt7mqN

>>1770288
You wont freeze solid until all your heat radiates away into space. This will take some time and you'll be dead from lack of oxygen long before this.

But yea, if you're suddenly thrust into a vacuum then recovered with a short amount of time (no more than a few minutes, to be sure) you'll probably survive.

>>1770297
>>1770300

Movies and sci fi books have all lied to me, it seems.

I can only trust /sci/~

>>1770288
Since there's no atmosphere in space, there's nothing to really "suck" the heat off of you. It's like how cold water sucks heat from you a lot faster than cold air of the same temperature; the surface area makes transfer of heat faster. On the other hand, the lack of surface area of space to transfer heat to makes heat escape a little harder. At least, that's how I understand it.

>>1770305

Makes sense to me.

Okay I guess that answers my question! Thanks a lot /sci/.

We can just let this die now, and move on to more important things, like religion or magnets.

If you force the air out of your lungs first the change in pressure won't kill you, and you can probably last until hypoxia sets in (a minute at most). Unfortunate you'd be in bad shape even if rescued in time.

Water can't exist in a liquid state at that low of pressure. You'll get shallow frostbite almost immediately, lose your eyes if you don't close them, and if you're dumb enough to open your mouth you'll destroy your lungs.

>>1770304

2001 depicted it accurately. Total Recall did not.

>>1770299
Well, technically you'll never freeze to death in space. It's like being wrapped up in a thermal blanket.

Your body will maintain homeostasis so long as you're alive.

Now, what I've been wondering about, is how long you can survive with a supply of oxygen [O2 mask of some kind] with an unpressurized suit. The air isn't 'sucked' out of your lungs, but can you still breathe, or does the pressure difference prevent that?

>>1770323
>total recall

AAAAAAAIIIIIIIIIIIIIRRRRRRRRRR

Space is really, really cold but is also a fantastic insulator. You won't die from the cold.

Oh no, your first problem is that vacuum causes your oxygen transport system to work in reverse. It rapidly diffuses out of your tissues and will cause hypoxia within seconds, far more rapidly than if you had no air at standard pressure.

You cannot hold your breath. The pressure differential is stronger than you are.

Your next problem will be the vapor pressure of your bodily fluids, but since you'll be unconscious within twelve seconds of vacuum exposure you won't have to experience all the body horrors that come next.

>>1770335
>how long you can survive with a supply of oxygen [O2 mask of some kind] with an unpressurized suit

Can the mask be voluntarily removed? Because that will probably happen just to end it.

ITT: shit tier's who think a human in space will not freeze because only radiative heat loss can occur.

Pic related, its the phase diagram of water. At zero pressure it evaporates. All water in your skin evaporates, causing convection heat loss, the same way evaporating sweat cools you on Earth. In space your outer layers will freeze.

>>1770384
And the inner layers are the important ones.

>>1770384
Do you even understand why we have skin to begin with?

Protip: The skin may contain water, but it sure as hell doesn't leak it like a sieve unless the body wants it to.

If you start to get too cold, your body will automatically stop sweating. You don't even have to think about it! In fact, you'll even begin to shiver!

I know, it's amazing.

>>1770266
http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970603.html

"If you don't try to hold your breath, exposure to space for half a minute or so is unlikely to produce permanent injury. Holding your breath is likely to damage your lungs, something scuba divers have to watch out for when ascending, and you'll have eardrum trouble if your Eustachian tubes are badly plugged up, but theory predicts -- and animal experiments confirm -- that otherwise, exposure to vacuum causes no immediate injury. You do not explode. Your blood does not boil. You do not freeze. You do not instantly lose consciousness."

>take a deep breath at first to get an injection of oxygen
>exhale deeply, you don't want to have your lungs full in hard vacuum
>once outside, stay out of the sun as the radiation will fuck you in seconds. the cold will be biting but it'll feel more like staring up at the night sky in the desert. You'll cool from the outside in basically

>move fast, if you lose consciousness and have nobody to help, you are absolutely fucked. The average person will have 30 seconds before pass out without any air in your lungs

>>1770407
>move fast
>implying people can swim through vacuum by flailing around or have built-in thrusters

inb4 herpderp your blood boils. NO IT DOESNT DIRTY NEGOES!

>>1770417
well whatever you need to do to get into an airlock, do it fast

>>1770417
if you threw something you could drift in the opposite direction of the throw

if all else fails you can always take a huge dump and push off of that. However, this is dangerous as if you do it you'll forever be known as a shit faggot.

>>1770432
thanks OP she hot bitch in porn. i cum so hard while hurtling through space toward a decommissioned space station. slowly, i pull my knees to my chest and close my eyes as my bowels begin to expel hundreds upon hundreds of beautiful, symmetrical turds, brown as the day is long. i laugh like a young girl as my turds drift aimlessly behind me; they are as butterflies to a child frolicking in the fields of elysium.

i approach the station's docking port, flaccid cock in hand, and prepare to float gently into its inviting confines. i extend my cockless arm jubilantly, as to celebrate the majesty and depth of space, and thank jesus christ for this ultimate gift and blessing. but suddenly, my outstretched arm collides with the outer rim of the docking port, and the trajectory of my quaggy body is violently halted.

the ftes afford me barely enough time to turn his head before the turds arrive. one thousand turds, each one seemingly larger than the last. i try in vain to cleanse mu eyes of the shitsting, but succeed only in smearing my own fecal matter into a fine asspaste, which slowly seeps into my eyes and nasal cavity. i inhale three hundred and twenty four Space Turds; my lungsare permeated completely with my own shit. i hang lax, spirit broken, defeated by poop. i will never be the same. i am forever a shit faggot. it doesn't help that ps3 has no games.

I'm not sure if anyone here has seen Event Horizon, but the scene where the dude flies through space/Neptune's upper atmosphere seem pretty much dead-on.

http://www.youtube.com/watch?v=Cqr9FnzyN_w

related. i think this movie got it pretty right.

>>1770530

Agreed, such an awesome movie, as well.

>>1770297
IT DOES ON THE MAGIC SCHOOL BUS

>>1770438
>>1770438
>>1770438
>>1770438

>>1770530
I don't think you are going to lose that much heat due to radiation that fast.

>>1770595

Yeah, certainly not enough to shatter like that.

>>1770595
well their is no radiation from the sun since they are behind the massive shield of their ships. i could be wrong though.

>>1770535
FFUUUU I remember I used to love that show! Especially that episode about soap was awesome.

>>1770595
http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/bodrad.html

With that you get about 1000W of heat loss due to radiation. But given that's the only way you lose heat in space and that they are using highly reflective space blankets, temperature wise you'd be good for a long time.

>Implying the blood in your body along with all other liquids wouldn't instantly start boiling because of a vacuum

>>1770617
>Implying your skin wouldn't be able to keep the internal pressure up.

>>1770623
>Implying you don't have pores, and implying there were implications.

>http://www.geoffreylandis.com/vacuum.html
>http://www.alcyone.com/max/links/science.html#Explosive_decompression_amp_vacuum_exposure
Taken from: http://projectrho.com/rocket/

>>1770643
>>1770629
>>1770623

>fucking implications, how do they work?

check wikipedia bitch >.>
plus u only black out after 90 seconds.

>>1770288
Why do you think you would freeze? This is the silliest myth out there. A vacuum is a near-perfect insulator. The only cooling effect is from evaporation.

>>1770304
I'm guessing you just saw Sunshine. Yeah, I raged when they instafroze when exposed to the vacuum of space.

>>1770762
>The only cooling effect is from evaporation.

No. Thermal loss due to radiation. Which is pretty significant when you have a close to 0K radiation coming back at you.

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/bodrad.html

>>1770417

actually, if they knew how the spacetime is deformed (if it is), they could.

of course it would be terribly slow and they would die way before they had a chance to make it...

>>1770789
I meant the only significant cooling effect. You can't radiate heat faster than your body produces heat.

Nasa did experiments on chimps in the late 60's.

They worked out if you suddenly de-compress you have about 15-20 seconds of conciousness where you can do stuff (like in the film 2001).

After that you go uncooncious but can be saved after 2 whole mins in vacuum.

Nasa have taken the chimp experiments off their web site now though