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  #31 (permalink)  
Old 09-May-2008, 10:49 PM
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It is by looking at management that gives a clue as to the balancing of the energies of space, that is assuming a series of connected energies. In management the most rigid and least changing parts of a team are the top and the bottom while middle management has to be the most flexible of all.

To avoid the possibility of irregularity of simple cross connection within structure one option is to associate the top and the bottom known entities a direct link and let the middle work out a multitude of variations within.

That would give an end to end structure for the proton as a worm hole which means a time like quality along its length. So the stability of the proton may have more in common with the perceived expansion of the universe and just be a part of planetary solar or galactic matter more by way of association. That is why I looked at the option of something similar to a goiter that is able to be moved fairly freely around the line of where it is connected and perhaps associated with a right angle corner of connection between lead in and lead out.

Then all middle structures would have to be worked out based on the proximity it has to the end structures which allows for a multitude of connection types in the middle. Perhaps unlike some business hierarchies the communication would not be dominated by the need from the middle to sort out the vagaries of the top and the bottom but the middle although allowing incredible variation would conform to the unity and connection of top and bottom.

Otherwise it is a bizarro second universe style connection which could not exactly be ruled out provided it gave the same level of stability to top perceived uniformity of space and bottom stability of the proton. Given the sheer order of magnitude of difference in calculated energy requirements I favor the beginning to end in structure and also note how often by just working off the top of my head that I have been wrong.
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  #32 (permalink)  
Old 10-May-2008, 08:16 PM
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Then you are removing GR as the model. Are you sure you want to do that? In GR, spacetime, is represented by the manifold, gravity, is represented by the warpage of the manifold, described by the Ricci Tensor, which is related to the amound of energy in the Stress-energy tensor. Spacetime and energy are on the opposite sides of the equation and therfore can't be the same thing. I'll await your model replacing the GR model. Or your retraction, take your pick.



Not according to GR. Maybe in your new model.
Sorry did not mean = just mean that space time can not exist without energy. If energy is on one side of the equation and space time on the other wouldnt that mean that they equal or at least related. What happens in the formula when the curvature goes to 0 ?
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Old 11-May-2008, 02:43 PM
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Sorry did not mean = just mean that space time can not exist without energy. If energy is on one side of the equation and space time on the other wouldnt that mean that they equal or at least related.
Not really. All it means is that some of the properties of spacetime are equal to or related to energy. Doesn't mean spacetime itself is. .

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What happens in the formula when the curvature goes to 0 ?
You have a flat manifold. By the model, this means you have Euclidean spacetime. But you still have spacetime.
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Old 12-May-2008, 02:34 AM
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OK, I again will try to consolidate a few questions that I have.

1) I was thinking about space and what is space. People here say that space is nothing. They give examples of expanding balloons and the like and say that space is just the distance between particles. I disagree with this. Space is the canvas that matter is painted on. ( heh ... well more complicated than that) Space is not nothing. When space expands it has a specific meaning. Space has properties. The space right outside a black hole differs from the space in the deepest void of the universe. Rates of expansion, curvature, temperature?? Space can have state. Space is not nothing.
space is about the " ROOM " that particles need in order to manifest

" if " space does in fact expand it is not because of " space " but because of the matter in space

what properties does space have in and of its self , by itself , alone ?

you don't curve space you curve the matter in that space

space is nothing , since it is a consequence of , rather than an impetus







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2) Space is gravity. Without gravity there is no such thing as space. A true vacuum can not exist. Our universe or at least our visible universe is all connected because at every point in space there is some energy and some gravity. Space does not exist outside of this definition. Gravity not only curves space by it is space. Space and gravity and energy go hand in hand, one can not exist without the other.
but what is gravity based on ?

energy/ matter

so gravity is not based on space but on the energy/matter IN a particular place in space

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3) Because matter and energy are conserved based on the first law of thermodynamics, space is also conserved.
yes




Quote:
What does that even mean? That means that the total amount of space in the universe remains constant. Space can curve, but when space is curved other space needs to be curved to compensate for this curvature.
space cannot be curved

this concept that space can be curved is a mathematical concept and is not derived from reality


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4) the perceived expansion of the universe is the compensation for the curvature from all the gravity in the universe.
which ends up as a contradiction when looked at three dimensionally

and a null expansion in the end
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Old 12-May-2008, 02:57 AM
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Not really. All it means is that some of the properties of spacetime are equal to or related to energy. Doesn't mean spacetime itself is. .



You have a flat manifold. By the model, this means you have Euclidean spacetime. But you still have spacetime.

OK but what is the metric?
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Old 12-May-2008, 03:11 AM
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does the metric really relate to the reality of the situation ? the physical dynamics

no
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Old 12-May-2008, 03:14 AM
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Hmmmm ... I think I disagree with most of this.

I agree that space acts as the room. However, I believe that it is more than that. Light passing through curved space curves. I can see your point that the light is what is curving ... but I think that this is where we disagree. I look as space-time as being the rails that guides matter.

Lets look at gravity and a black hole. Why does gravity escape from a black hole but light doesnt? I believe the answer to be that space is curved ... but while light is effected by the curvature of space-time gravity is not and can thusly escape.

Also time is curved along with space. So as the flow of time relatively changes near a gravitational source so does any measurement of space change in proportionately in that area.

Space has properties ... the amount of energy that is in its space + the fields that it is in ... gravitational, magnetic etc ...




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Originally Posted by north View Post
space is about the " ROOM " that particles need in order to manifest

" if " space does in fact expand it is not because of " space " but because of the matter in space

what properties does space have in and of its self , by itself , alone ?

you don't curve space you curve the matter in that space

space is nothing , since it is a consequence of , rather than an impetus









but what is gravity based on ?

energy/ matter

so gravity is not based on space but on the energy/matter IN a particular place in space



yes






space cannot be curved

this concept that space can be curved is a mathematical concept and is not derived from reality




which ends up as a contradiction when looked at three dimensionally

and a null expansion in the end
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Old 12-May-2008, 03:29 AM
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Hmmmm ... I think I disagree with most of this.

I agree that space acts as the room. However, I believe that it is more than that. Light passing through curved space curves.
I disagree

look at light passing through water , the light curves because the Nature of water

inotherwords there is a form of matter which " causes " the curvature of light in space not empty space in and of its self
  #39 (permalink)  
Old 12-May-2008, 03:31 AM
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I disagree

look at light passing through water , the light curves because the Nature of water

inotherwords there is a form of matter which " causes " the curvature of light in space not empty space in and of its self
Light appears to bend (not CURVE) because of the nature of light.
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Old 12-May-2008, 03:39 AM
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Per your definition of space how does it expand? Things are just moving apart from each other?

Do all points in empty space allow light to pass through it in the exact same way?

Does a point in space have a temperature? gravitational field? magnetic field?



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I disagree

look at light passing through water , the light curves because the Nature of water

inotherwords there is a form of matter which " causes " the curvature of light in space not empty space in and of its self
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Old 12-May-2008, 03:43 AM
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Originally Posted by north
I disagree

look at light passing through water , the light curves because the Nature of water

inotherwords there is a form of matter which " causes " the curvature of light in space not empty space in and of its self

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Originally Posted by Neverfly View Post
Light appears to bend (not CURVE) because of the nature of light.
the light does not " appear to be bend " light does bend
  #42 (permalink)  
Old 12-May-2008, 05:35 AM
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Michael Noonan Michael Noonan is offline
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the light does not " appear to be bend " light does bend
Well it is more correctly put that light follows the geodesics (the shape) of space because light is a mass-less energy. It is incapable of determining the vector it will travel because that is decided by the direction of emission from the light source and as such light must follow the curvature of space.

Light may be absorbed and re-emitted which would lead to scattering which is the equivalent of 'light noise' or general light wash when looking at an individual image. It may have the speed determined by the medium in which it is travelling and that is why it is measured as light speed in a vacuum. In a diamond light travels at about 40% the speed of light because of the effect of the material in a diamond.

Just a small point which is why tensor equations are used to calculate curvature but the curvature is not of the light.
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  #43 (permalink)  
Old 12-May-2008, 11:47 AM
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OK but what is the metric?
The metric tells you how to measure distance (for each coordinate) on a manifold. Which is quite handy in GR, as most of the time, the manifold, which represents spacetime, is warped. The metric provides you with a way to measure distance and time on a particular manifold. Remember, the manifold represents spacetime. For a discussion of metrics, go here
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Old 12-May-2008, 01:36 PM
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the light does not " appear to be bend " light does bend
Really ... I guess it depends how you are looking at it. Light goes in a straight line.
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Old 12-May-2008, 01:39 PM
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The metric tells you how to measure distance (for each coordinate) on a manifold. Which is quite handy in GR, as most of the time, the manifold, which represents spacetime, is warped. The metric provides you with a way to measure distance and time on a particular manifold. Remember, the manifold represents spacetime. For a discussion of metrics, go here
Well that was my question, how does one determine what metric to use?
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Old 12-May-2008, 04:13 PM
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Well that was my question, how does one determine what metric to use?
By using the manifold you get when you solve the Einstein Field Equations. The metric tensor comes from the tangent spaces of the manifold. Mathematically, it drops out as a matrix, once you decide what coordinate system you want to use (remember, GR is coordinate free, it allows you to use any arbitrary set of coordinates). It was explained in the link in my original answer.
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Old 12-May-2008, 05:52 PM
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Sorry article is a little over my head. I may have asked the question wrong.

What I want to ask is when energy = 0 on one side of GR equation you have a flat manifold. Right? What does that mean? Uggg ... I realize all that I do not know right now because I dont know the terms of the question I want to ask. Can you please show the equation again when energy is equal to 0 and all zero'd stuff removed?



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By using the manifold you get when you solve the Einstein Field Equations. The metric tensor comes from the tangent spaces of the manifold. Mathematically, it drops out as a matrix, once you decide what coordinate system you want to use (remember, GR is coordinate free, it allows you to use any arbitrary set of coordinates). It was explained in the link in my original answer.
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Old 13-May-2008, 01:35 AM
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Sorry article is a little over my head. I may have asked the question wrong.

What I want to ask is when energy = 0 on one side of GR equation you have a flat manifold. Right? What does that mean?
You have a Minkowski spacetime which has a Minkowski metric. Which has three space and one time dimension. Euclidean Space (which was what space was though to be prior to relativity) has three space dimentions. Think of it this way, in flat space, the interior angles of a triangle add up to 180 degrees. In curved space, they can be more or less, depending on the curvature.


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Uggg ... I realize all that I do not know right now because I dont know the terms of the question I want to ask. Can you please show the equation again when energy is equal to 0 and all zero'd stuff removed?
Which equation? There are many interrelated equations. I think you're talking about the Einstein Field Equations, (which is where the curvature and stress-energy tensors are) here it is Gab=0 or equivalently, Rab=0. Where G is the Einstein tensor and R is the Ricci tensor. The explanations and derivations can be found here
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Last edited by Jim : 14-May-2008 at 05:02 PM. Reason: fixed quote tag placement... I think
  #49 (permalink)  
Old 13-May-2008, 02:40 PM
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Using:

( taken from another thread )
Rij - (gij*R)/2 + L*gij = -8*pi*G/c2 * Tij

Rij = Ricci tensor
R= curvature scalar
gij = metric tensor
L = cosmological constant
G = Newtonian gravitational constant
c = speed of light
Tij = energy - momentum tensor (sometimes called stress energy tensor
pi = 3.14159265358979323846…

If the right side goes to 0
Rij - (gij*R)/2 + L*gij = 0

then

Rij + L*gij = - (gij*R)/2 right?

But what does that mean?





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Which equation? There are many interrelated equations. I think you're talking about the Einstein Field Equations, (which is where the curvature and stress-energy tensors are) here it is Gab=0 or equivalently, Rab=0. Where G is the Einstein tensor and R is the Ricci tensor. The explanations and derivations can be found here
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Old 14-May-2008, 02:13 AM
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Originall