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Gomp
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Vacuum.
#5942139 - 08/07/06 08:35 PM (17 years, 5 months ago) |
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Is vacuum the absence of [any] molecules?
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TODAY
Battletoad


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Re: Vacuum. [Re: Gomp]
#5942350 - 08/07/06 09:34 PM (17 years, 5 months ago) |
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Well...that's what they say about space. But there are these things called neutrinos that are totally inert (won't react with anything...oh wait, they will react with something but that something doesn't exist in space) that are being emitted by the sun and other stars that may actually make up the vacuum of space.
If I understand the purpose of your question, I too don't understand how any space empty of particles can exist. Neutrinos and possibly other particles that don't react with anything are possibly the makeup of this 'empty' space.
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ZippoZ
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Re: Vacuum. [Re: TODAY]
#5942407 - 08/07/06 09:56 PM (17 years, 5 months ago) |
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its a much lower density of space, and with a lower density, you will have a lower concentnration of anything that was origonally in the vaccum in the first place.
i dont think that you can acieve a total vaccum, if there is such a thing, and this particles will always remain.
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jungjedi
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Re: Vacuum. [Re: ZippoZ]
#5942527 - 08/07/06 10:43 PM (17 years, 5 months ago) |
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there is also something called a FALSE VACCUM http://en.wikipedia.org/wiki/False_vacuum
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Gomp
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Re: Vacuum. [Re: TODAY]
#5942701 - 08/07/06 11:44 PM (17 years, 5 months ago) |
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Quote:
TODAY said: Well...that's what they say about space. But there are these things called neutrinos that are totally inert (won't react with anything...oh wait, they will react with something but that something doesn't exist in space) that are being emitted by the sun and other stars that may actually make up the vacuum of space.
If I understand the purpose of your question, I too don't understand how any space empty of particles can exist. Neutrinos and possibly other particles that don't react with anything are possibly the makeup of this 'empty' space.
Interesting! 
Neutrinos are not within molecules? And, molecules are not within neutrinos?
But, molecules and Neutrinos, interact?!
(Not sure if i am getting that.)
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And.. No, that is not the purpose of my question.. There are many purposes, BTW. But here is one;
I think about gravitation, as opposed to levitation.
Gravi- meaning “heavy/filled(up)/..” something like that.. And, Levi- meaning “empty/light/..” …
I heard or think or ‘whatever’: that if you fall out from a aircraft, then you are unaffected by gravity, until you the moment you hit the ground. “Free-fallers are unaffected by gravitational forces” ..
I think it is very possible to understand how any space empty of particles can exist.
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TODAY
Battletoad


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Re: Vacuum. [Re: Gomp]
#5942720 - 08/07/06 11:49 PM (17 years, 5 months ago) |
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neutrinos ARE within molecules and are emitted as a product of the energy when they fuse together. that is my understanding. I'm not an all knowing being...some on the shroomery or closer to that than me...they will reply
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Gomp
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Re: Vacuum. [Re: TODAY]
#5942777 - 08/08/06 12:09 AM (17 years, 5 months ago) |
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Thought so..
I'll see that as a digression then! :P
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Sinthetic
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Re: Vacuum. [Re: Gomp]
#5947017 - 08/09/06 10:44 AM (17 years, 5 months ago) |
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Quote:
I heard or think or ‘whatever’: that if you fall out from a aircraft, then you are unaffected by gravity, until you the moment you hit the ground. “Free-fallers are unaffected by gravitational forces” ..
That doesn't even make sense. If you were free falling you are being effected by gravity. Otherwise you wouldn't be falling.
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Gomp
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Quote:
Sinthetic said:
Quote:
I heard or think or ‘whatever’: that if you fall out from a aircraft, then you are unaffected by gravity, until you the moment you hit the ground. “Free-fallers are unaffected by gravitational forces” ..
That doesn't even make sense. If you were free falling you are being effected by gravity. Otherwise you wouldn't be falling.
NO.. But, feel free to think so!

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Seuss
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Re: Vacuum. [Re: Gomp]
#5955544 - 08/12/06 02:17 AM (17 years, 5 months ago) |
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Gravity on earth pulls one towards the earth with an acceleration of 9.8 m/s. When you free fall, you fall with an acceleration of 9.8 m/s, downward. When this happens, you are weightless. If you took something out of your pocket and dropped it, the object would seem to float next to you as you both fall towards the ground at the same velocity (ignoring air resistance). However, it would be inaccurate to claim that you are unaffected by gravity.
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Gomp
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Re: Vacuum. [Re: Seuss]
#5955813 - 08/12/06 07:00 AM (17 years, 5 months ago) |
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Kind sir/mam..
I know the 'old laws of gravity'..
But, they are to old for me to live by.. (Out-dated, and "proven" 'wrong'.) Feel free to limit yourself to that kind of thinking, though! And again, think you for sharing your view!
I know a free-falling object is unaffected by "gravitation". And, I respect that you know otherwise...

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Diploid
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Re: Vacuum. [Re: Gomp]
#5955827 - 08/12/06 07:15 AM (17 years, 5 months ago) |
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I know a free-falling object is unaffected by "gravitation".
Then why is it falling?
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iateshaggy
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Re: Vacuum. [Re: Diploid]
#5955890 - 08/12/06 08:50 AM (17 years, 5 months ago) |
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if u were unaffected by gravity then u wouldn't need a parachute. u could just fly back up when u got close to the ground.
now, to the vacuum stuff. i'd have to agree that u can't make a perfect vacuum. nasa has a giant vacuum chamber in their houston facility and it even has a little air in it, but it is so little that an air molecule can travel from the floor to the ceiling w/o bumping another molecule.
it's kinda interesting how celestial bodies break the rules of osmosis.
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Gomp
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Re: Vacuum. [Re: Diploid]
#5956179 - 08/12/06 11:19 AM (17 years, 5 months ago) |
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Quote:
Diploid said: I know a free-falling object is unaffected by "gravitation".
Then why is it falling?
Cause it is not resting on anything thick enough to sustain its mass.
Key word - Density..
But, I wont argue on your/that way of seeing gravity. 
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Gomp
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Quote:
iateshaggy said: if u were unaffected by gravity then u wouldn't need a parachute. u could just fly back up when u got close to the ground.
Not that I want to change your way of writing, but, 'u' is a letter.. 
And, not if you were 'not effected' by something else. Then you would still fall, just like an apple.  
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iateshaggy
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Re: Vacuum. [Re: Gomp]
#5956774 - 08/12/06 02:35 PM (17 years, 5 months ago) |
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so by your way of thinking, how are we "not affected" by the moon gravity since we're not resting on it?
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Diploid
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Re: Vacuum. [Re: Gomp]
#5957005 - 08/12/06 04:50 PM (17 years, 5 months ago) |
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Cause it is not resting on anything thick enough to sustain its mass.
But if you take the same object out into interstellar space where essentially there is no gravity at all, and then if you don't rest it on anything, it won't fall. Only when it's near a source of gravity, will it fall.
Why would that be?
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Gomp
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Re: Vacuum. [Re: Diploid]
#5961805 - 08/14/06 04:15 AM (17 years, 5 months ago) |
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Quote:
Diploid said: Cause it is not resting on anything thick enough to sustain its mass.
But if you take the same object out into interstellar space where essentially there is no gravity at all, and then if you don't rest it on anything, it won't fall. Only when it's near a source of gravity, will it fall.
Why would that be?
Vacuum..
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Gomp
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Quote:
iateshaggy said: so by your way of thinking, how are we "not affected" by the moon gravity since we're not resting on it?
Again, not "your way of thinking", but "a way of thinking", but that is semantics I guess.
Anyways; Good question.
But we are.  
What I am look at here is the effect of electromagnetism, and magnetoelectrism.. 

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Diploid
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Re: Vacuum. [Re: Gomp]
#5962266 - 08/14/06 10:32 AM (17 years, 5 months ago) |
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Vacuum..
Objects placed in a vacuum on Earth still fall, so that can't be right.
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