SyntaxVorlon said:
papajoe, you have not shown any evidence for the thesis that space cannot expand. All you have said is that space is granular, which I take issue with and you have reiterated the claim. But we can observe the redshift of far objects, we can observe this redshift being very very high, to the point where the objects would have to be moving away at a velocity greater than the speed of light or the space between is getting larger at a rate that is great enough to cause the light coming from them to be redshifted.
Sorry! I didn’t make myself clear. I thought I said that space cannot bend. But it can expand through the addition of Plank lengths according to the Einstein equation, solution for “tâ€Â.
"Space is granular! And cannot be elastic."
Why not? You really haven't given a good account for this statement. I think Greene's explanation there is too simple, it removes a great deal of the content. He says that space is quantized, but this is not correct. Space cannot be understood in any smaller chucks than spaces which are defined by Plank's constant, but that is related more to the uncertainty principle. But I have not seen why this denies expansion.
If space were continuos and elastic, the density would change with the expansion and the speed of light could not be constant.
"Something must be added for it to expand. Something must be removed for it to shrink. Like a pile of sand or a bar of concrete, it cannot bend.
But if the effect of gravity was space flowing into an object, an object would make a curved path, like a boat crossing a river current. Einstein’s equations would still hold!"
Something is added, at least that is what the current thinking points to, space itself is filled with the energy that started the big bang, this energy is believed to drive the expansion of space.
Energy must be expressed in order to do something; and expressed ought to be detectable.
Empty space, left on its own appears to expand at a rate proportional to distance.
Distance is also time ..... this could also mean that it expanded in the past at a greater rate.
Gravity squeezes space, or rather matter squeezes space, and gravity is the result.
Then it ought to push, rather than pull.
"The Lensing effect would still hold if gravity was space shrinking."
I meant this as an example of the power of gravity, which you seemed to believe could not be powerful enough to keep galaxy clusters or galaxies themselves together.
Sorry, I never said that. The inflow of space into matter would appear to have the same effect as gravity, that’s why I maintain that the laws of motion due to gravity would still hold.
"The affect itself must propagate at the speed of light, as you point out below, that the gravitons is a particle and a wave."
I meant by that that gravity does not self interact. The mass of the Black Hole pulls space towards it, and crushes the universe at its center. The reason light has a hard time escaping a Black Hole is because space has been pulled down into itself and has become basically curved.
It seems to me that space “curved†all the way around a black hole would have no “event horizon†at all. Space in this condition would’nt even leave a divot.
However, there would be, if the affect of gravity were due to the inflow of space.
"For there to be such things as gravitons; all the bits of matter in my body would have gravitons from little bits from every star in the universe and they would of had to be associated with those bits from the beginning.
It may not be a scientific critique, but it’s just too doggone cumbersome."
Why? Is it so cumbersome for the light from every star in the sky to be visible to you?(within the constraints on your eyes' capability) As I said before, that light is basically equivalent to touch. Gravitons are the way matter interacts with space, space is wiggling. In a manner it is an entanglement of all things to each other that began with the universe and persists.
Your point is very well taken, I hadn’t thought of it in that way.
"The way I understand it, is that space is dimensional (static) and the time-flow is dynamic. Almost comparable to matter and energy.
What if the C in the Einstein equation were converted into pure speed, distance over time d/t ? So that the d represents length or space and the t is just time. Then solve for t.
Could it actually be that matter and energy and even space itself is an expression of time???
In my hypophysis this is true; so that the time-flow then, MUST be converted into mass, energy or dimension."
This is what I have the most problem with. Matter is energy, just dense. Energy is matter, just diffuse. This static/dynamic dichotomy is both false and meaningless.
What I think the equation does is provide a value for the obvious, that energy, matter and space itself, are expressions of time.
If you take c and describe it in terms of distance and time, then you get t = d/c. That's all. In terms of what you said, no this conclusion is, frankly, nonsense. Time is not well enough understood, it passes and because of the speed of light it is the fourth dimension. It is because it takes time, even at maximum speed(= c) things that seem close are even more distant. Information itself cannot travel faster than light.
It is completely acceptable to substitute d/t for speed. Scientist and math folks do it all the time.
Isn’t it true that one hour of time is equal to some 186 + thousand miles of space?
Also, on those last thought experiments; those all require us to assume that space is curved, that the universe is a four-torus. But this is an assumption that has been discredited, as of late, by the WMAP.The evidence, now, points to the universe not being curved but in fact being quite flat, verging slightly away from inward curve in fact. This is what prompts most scientists to the belief that the universe is headed toward continued expansion, unto a Frost-like whimper.
As I pointed out before, the WMAP is not proof, because it can be explained in another way as well.
It was my hope to show in those experiments that space is straight (not curved) and light returns to the point of origin from a 180 degree angle.
That the universe has no outside edge. (Space that has dimensions, cannot be adjacent to nothing, a singularity, that has no dimensions) Space cannot be a “four-torus†or any known geometrical shape within the universe, because they all must have an outside edge!
That space is composed entirety of real centers all separated by time.
That in the early universe, when it was very small and light may have even traveled at a higher constant; beams of light traversed the universe a multitude of times.
See the Website:
http://www.answersingenesis.org/tj/v16/i2/galaxy.asp
“Figure 6. Galaxies tend to be grouped in concentric spherical shells around our home galaxy. The distance interval between shells is of the order of a million light years, but since several different intervals exist, the true picture is more complex than the idealization shown here.â€Â
His research supports my view, but I donâ€â¢t agree with his conclusions.
For one, the universe and these “shells†will look the same from any galaxy.