Noise traveling through space?

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illusion88

Lifer
Oct 2, 2001
13,164
3
81
Originally posted by: jordanz
This just inspired another question:

If you had a room, a sealed off, air filled room (ie. your normal office) and you had it surrounded by another room, which is a "vacuum".. Would the room inside the vacuumed room be soundproof from any outside noise?

I'm thinking a different way, as in.. there is a room, and there is another thin 1-inch wall that is a vacuum on the inside. But it's not actually touching the middle room, its more or less just surrounding it. Get me?

So the room is floating? Its not touching the walls of the vacum in any way?
If such is the case it would be completly soundproof to the outside world. Inside you could hear sounds fine, but if a bomb went off outside of the vacume the ones inside the office would not hear a thing. Likewise, if a bomb went off inside, anyone outside wouldn't hear it.
 

jordanz

Senior member
Apr 27, 2005
275
0
0
I really like this idea. I feel as though my little vacuum room is possibly. All I'm thinking is I have two rooms (encased in a housing structure of some sort), one inside another, but the outside one is only maybe 3-4ft thick. This outside room is propped on stilts, in which the inside room is the same way just propped up on the inner-walls of the outside room.

Now I just need to know how to make a vacuum, and when I buy a house, I can hide in this room forever. No one will find me. My evil plans are coming together.
 

dighn

Lifer
Aug 12, 2001
22,820
4
81
Originally posted by: Ctrackstar126
doesn't a radio use sound waves? Yea I thought so what country you grow up in?

a radio essentially converts sound waves to radio waves then back to sound waves

i'm beginning to think shens here
 

sonz70

Banned
Apr 19, 2005
3,693
1
0
Sound travels by vibrations, since it cannot make constant vibrations in space..it does not travel through "space"

/grade one science lesson
 

illusion88

Lifer
Oct 2, 2001
13,164
3
81
Originally posted by: Ctrackstar126
doesn't a radio use sound waves? Yea I thought so what country you grow up in?

I'm not going to answer this. I refuse to believe this is a legitimate question.
 

spidey07

No Lifer
Aug 4, 2000
65,469
5
76
Originally posted by: illusion88
Originally posted by: Ctrackstar126
doesn't a radio use sound waves? Yea I thought so what country you grow up in?

I'm not going to answer this. I refuse to believe this is a legitimate question.

I agree.

Something is very wrong here.

No way that is a legitimate question unless the OP hasn't been to elementary school yet.
 

sonz70

Banned
Apr 19, 2005
3,693
1
0
Or maybe there is


http://www.astronomycafe.net/qadir/ask/a11650.html


Is there really sound in space?

Actually...yes!!

What is sound? It is a pressure wave. So long as you have some kind of gaseous medium, you will have the possibility of forming pressure waves in it by 'shocking' it in some way.

In space, the interplanetary medium is a very dilute gas at a density of about 10 atoms per cubic centimeter, and the speed of sound in this medium is about 300 kilometers/sec. Typical disturbances due to solar storms and 'magneto-sonic turbulence' at the earth's magnetopause have scales of hundreds of kilometers, so the acoustic wavelengths are enormous. Human ears would never hear them, but we can technologically detect these pressure changes and play them back for our ears to hear by electronically compressing them.
 

dighn

Lifer
Aug 12, 2001
22,820
4
81
Originally posted by: spidey07
Originally posted by: illusion88
Originally posted by: Ctrackstar126
doesn't a radio use sound waves? Yea I thought so what country you grow up in?

I'm not going to answer this. I refuse to believe this is a legitimate question.

I agree.

Something is very wrong here.

No way that is a legitimate question unless the OP hasn't been to elementary school yet.

this is ridiculous. you can't even trust questions to be legit anymore around here.
 

myusername

Diamond Member
Jun 8, 2003
5,046
0
0
Well look .. the answer is obvious and easily demonstrable by a bell jar and an alarm clock .. but I want to know -

Isn't sound energy? Where does the energy go? The wall of the vessel is not absorbing it - it simply ceases to be :confused:
 

hjo3

Diamond Member
May 22, 2003
7,354
4
0
Originally posted by: Ctrackstar126
doesn't a radio use sound waves? Yea I thought so what country you grow up in?
A radio transmission is not a sound wave. It's an electromagnetic (EM) wave, like light (but on a different frequency).

An actual radio, like in your car, has electronics that interpret the EM wave and process it into signal that can be sent to the speakers to produce sound.

Sound waves are longitudinal, electromagnetic waves are transverse. You need some kind of matter to send longitudinal waves through (solid, gas, liquid). Transverse waves don't require matter to move through.
 

IronWing

No Lifer
Jul 20, 2001
72,970
34,171
136
Originally posted by: sonz70
Sound travels by vibrations, since it cannot make constant vibrations in space..it does not travel through "space"

/grade one science lesson

Didn't that little Martian dude cary an XJ36 Space Vibrator?
 

IronWing

No Lifer
Jul 20, 2001
72,970
34,171
136
Originally posted by: myusername
Well look .. the answer is obvious and easily demonstrable by a bell jar and an alarm clock .. but I want to know -

Isn't sound energy? Where does the energy go? The wall of the vessel is not absorbing it - it simply ceases to be :confused:

Heat.
 

hjo3

Diamond Member
May 22, 2003
7,354
4
0
Originally posted by: myusername
Well look .. the answer is obvious and easily demonstrable by a bell jar and an alarm clock .. but I want to know -

Isn't sound energy? Where does the energy go? The wall of the vessel is not absorbing it - it simply ceases to be :confused:
Short answer: it turns into heat and dissipates.
 

Ctrackstar126

Senior member
Jul 14, 2005
988
0
76
Originally posted by: hjo3
Originally posted by: Ctrackstar126
doesn't a radio use sound waves? Yea I thought so what country you grow up in?
A radio transmission is not a sound wave. It's an electromagnetic (EM) wave, like light (but on a different frequency).

An actual radio, like in your car, has electronics that interpret the EM wave and process it into signal that can be sent to the speakers to produce sound.

Sound waves are longitudinal, electromagnetic waves are transverse. You need some kind of matter to send longitudinal waves through (solid, gas, liquid). Transverse waves don't require matter to move through.

and there you have it. I didnt think it was a dumb question but ive been known to be wrong.
 

IronWing

No Lifer
Jul 20, 2001
72,970
34,171
136
Originally posted by: hjo3
Originally posted by: Ctrackstar126
doesn't a radio use sound waves? Yea I thought so what country you grow up in?
A radio transmission is not a sound wave. It's an electromagnetic (EM) wave, like light (but on a different frequency).

An actual radio, like in your car, has electronics that interpret the EM wave and process it into signal that can be sent to the speakers to produce sound.

Sound waves are longitudinal, electromagnetic waves are transverse. You need some kind of matter to send longitudinal waves through (solid, gas, liquid). Transverse waves don't require matter to move through.

So that's what a rectifier does? Takes longitudinal waves, rotates them 90 degrees to become transverse waves, and sends them back out? Cool.







;) wink wink
 

Descartes

Lifer
Oct 10, 1999
13,968
2
0
Originally posted by: jordanz
I really like this idea. I feel as though my little vacuum room is possibly. All I'm thinking is I have two rooms (encased in a housing structure of some sort), one inside another, but the outside one is only maybe 3-4ft thick. This outside room is propped on stilts, in which the inside room is the same way just propped up on the inner-walls of the outside room.

Now I just need to know how to make a vacuum, and when I buy a house, I can hide in this room forever. No one will find me. My evil plans are coming together.

Just buy a great big thermos.
 

hjo3

Diamond Member
May 22, 2003
7,354
4
0
Originally posted by: ironwing
So that's what a rectifier does? Takes longitudinal waves, rotates them 90 degrees to become transverse waves, and sends them back out? Cool.
Idiot, everyone knows it rotates them 270 degrees. Jeez.
 

SagaLore

Elite Member
Dec 18, 2001
24,036
21
81
Originally posted by: deathkoba
So if two people about 10 feet apart yelled at each other in space (without the bubble head thing) they wouldn't hear each other at all? I find that hard to believe.

Originally posted by: spidey07
Yah know, I remember this from 2'nd grade science. WTF is wrong with our school system?

LOL - man this is so pathetic. deathkoba that is not a bash at you - but at our school systems. I think it is because schools try to force so much into kids at once, with homework, tests, the distraction of the opposite sex, sports, and whatever - nobody has time to real absorb what they're "learning". I'm thinking about school system's curriculum really needs to be renovated.
 

dighn

Lifer
Aug 12, 2001
22,820
4
81
Originally posted by: hjo3
Sound waves are longitudinal, electromagnetic waves are transverse. You need some kind of matter to send longitudinal waves through (solid, gas, liquid). Transverse waves don't require matter to move through.

transverse waves don't require matter to propagate? what about wave on a string? surface of water? :confused: I think light is just a special case, it's not its "transverseness" that allows it to travel in vacuum.
 

hjo3

Diamond Member
May 22, 2003
7,354
4
0
Originally posted by: jordanz
I really like this idea. I feel as though my little vacuum room is possibly. All I'm thinking is I have two rooms (encased in a housing structure of some sort), one inside another, but the outside one is only maybe 3-4ft thick. This outside room is propped on stilts, in which the inside room is the same way just propped up on the inner-walls of the outside room.

Now I just need to know how to make a vacuum, and when I buy a house, I can hide in this room forever. No one will find me. My evil plans are coming together.
But then the inner room will have contact with the outer room and it won't be soundproofed. To do it right, you'd need to build them in zero gee or rig up something with very powerful electromagnets.
 

IronWing

No Lifer
Jul 20, 2001
72,970
34,171
136
If you want to learn about the different types of sound waves take a gander:

Here

The site concerns seismic waves but every wave type described can occur in the air and/or solids around you. Incidently the song Radar Love is incorrect, Love waves can not occur in the air but only on surfaces.
 

hjo3

Diamond Member
May 22, 2003
7,354
4
0
Originally posted by: dighn
Originally posted by: hjo3
Sound waves are longitudinal, electromagnetic waves are transverse. You need some kind of matter to send longitudinal waves through (solid, gas, liquid). Transverse waves don't require matter to move through.

transverse waves don't require matter to propagate? what about wave on a string? surface of water? :confused: I think light is just a special case, it's not its "transverseness" that allows it to travel in vacuum.
Well, waves on water are logitudinal, but you have a point with the string. Let me amend that to: transverse waves require either a solid medium or no medium.