[warriorscot]

In space no one can hear you scream.

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... for that short second before the vacuum rips you apart.

[Michael]

... for that short second before the vacuum rips you apart.

[Daniiel]

space just got alot scaryer
i cant belive i never thought about sound and space before
i feel kinda stupid

Edited by Daniiel, 24 January 2007 - 06:16 AM.

[warriorscot]

Actually you can survive a vacuum for like half a minute if the decompression is not explosive. Hurts alot though.

[james_8970]

They says it's the most painful death because your blood feels like you blood in boiling in your body. But how would they know of such a thing? How did we get onto this?

Also i never thought about sound waves in space, its makes so much sense i wonder why i never thought about it before this was brought up.....but then i don't think much about space.
James

[Pi rules]

They says it's the most painful death because your blood feels like you blood in boiling in your body. But how would they know of such a thing? How did we get onto this?

I'm am pretty sure that your blood would not boil, and like many think, you would not explode. While there is a decent amount of pressure (~1.013 x 10 ^5 pascals) pushing on you at each moment, your body is pushing back with the same pressure. In space, your body tries to keep pushing, so it may expand somewhat, but not nearly enough to explode. Your saliva might start to boil, but I don't think that your blood would due to having the same blood pressure. The main thing to worry about would be the lack of oxygen.

[warriorscot]

No youre blood would boil its a pressure thing anything liquid in your body which is about everything will boil off pretty quick at such low pressures the boiling point is small well below your normal body temperature so even if it was particularly cold your residual heat would cause yourself to boil, it takes a little bit for it to start boiling though as your body can retain enough pressure for a few seconds. Also your lungs would start to work in reverse and start stripping the oxygen from your blood again because of the low pressure this is just before they start to liquefy with the boiling and all.

Humans + Vacuum = BAD , we can survive surprisingly high pressure environments but low pressure we werent built for and while we have high pressure defence mechanisms and being mostly liquid inherently resistant to them low pressure we never evolved to handle because no animal apart from us can or ever has been able to reach that kind of environment.

[Pi rules]

I'm not so sure it would, though. One's body (especially skin and blood pressure) keep things at a decent pressure. You'd still get a nasty sunburn. I'm finding sources that say it both ways. NASA says that it would not, but MSN Encarta (a columnist) says that it would, although I'd trust an astrophysicist over a columnist. I should ask my AP Chemistry and AP Physics teachers, although aren't you in science (Chemistry?) in college? Oh well, I'm probably wrong anyway.

[Daniiel]

Sorry to change back to the subject of sound.
but i was wondering
how does it move things?
and make this vibrate?
because if the sound is louding the force is stronger or faster or somthing?
but i dont understnad how it can move things if its moving through air
theres a few other things im thinking about why i dont think it could..
but im struggling to put it into words
im not very good at putting my feelings/thoughts into words hahh

[warriorscot]

Because Sound is moving air it can impart a force(how you here) on anything it touches) although its tiny even for a very loud noise your own ears cause amplification of about 20 times so sound is actually quite quiet. Its velocity though is fixed by the mediums density it travels faster in water because the molecules are closer together its like a domino chain almost(except after they stood up they would spring back up on there own)if you laid your dominos as close as possible it will take less time to knock them all down but if they are as fas as possible it will take longer for them to hit each other and so longer for them to all fall down.

Im doing chemical engineering now at uni, i can pretty safely say your blood would boil from what i know about pressure(chemcial engineers are masters of that kind of thing) Your body isnt enough to retain that kind of pressure difference for very long. I read a good article in either new scientist or the other one they have in the US i cant remember the name might have been popular science or the engineering one i can only remember we don't get it here in a magazine. It might have came up on digg you might find it if you search for it, it was quite a good article explained it well you would survive longer than most people think but it would be rather unpleasant i was surprised about the reverse action of your lungs but it makes sense when you think about it. Also atmospheric pressure is actually quite high you have the weight of tens of thousands of tonnes of gas pushing down on you we are used to it but the difference between atmospheric and vacuum is HUGE.

You might want to stay away from the return key you only need to go to a new line for a new paragraph, Capitalisation also helps at the start of a new sentence.

[Daniiel]

so when somthing rattles at a loud sound.. its just the result of sound hitting it.
even then.. why does it rattle?
how?
i dont know the chemical term for air
and i completely forgot what i was going to say
[bleep]
it was good aswell
is there a certain element or atom it can only travel through.
like it cant travel through concreet. but if you were to add that atom to the concreet mixture. woud it travel. i know it wouldnt travel good at all, but would it travel?
hahah i probly sound very ignorant. but im only 15
theres my excuse hahah

[warriorscot]

Actually sound will travel through concrete just fine it'll go through pretty much anything denser materials will cause more degradation to the sound and it wont travel as far or materials that have allot of interfaces or ones with a honey comb structure are used in sound proofing because they absorb the energy and stop the sound by absorbing the energy.

Sound is mechanical energy which in fluids translates to surges in pressure, if you were to see them as you sometimes can if there is suspended visible particles they look like waves just on a smaller scale. There is no chemical term for air its always called air, its a mixture of allot of different gases look it up on wikipedia.

[Daniiel]

wow,
i waisted a far bit of time searching over google for it.
hahah [bleep]
so its a surge in pressure that rattles things?
i really like talking to you guys
although i know hardly anything about this kinda stuff
i like having people to be able to talk to
that wont tell me to stop asking stupid questions, or say they dont know.

[warriorscot]

Its how you learn although all that information was in that wikipedia article i linked to earlier on sound.

[Daniiel]

I read over your replies,
i dont think you sent a wikipedia link
i read ove rsome the ones that were sent but i dont understand what there about.
its like giving a an ordinary kindergarden student some grade 6 algebra and telling them to understand it,
i think thats a good way to put it.
i probly missed somthing
doesnt matter
thanks for your help though