- #176
subtillioN
Originally posted by Dave
Sorry.. what's this thread about?
change vs. stagnation
Originally posted by Dave
Sorry.. what's this thread about?
Originally posted by Eh
It's called thread hijacking, Dave.
The structure of the universe is bubblelike. But the superclusters are located in the tangent points of the bubbles, and indeed have a filamentary structure.One very famous filamentary structure is the Great WallThe filamentary structure of the superclusters is "bubblelike", and mostly circular in structure. Not like the "fingers of god"
Originally posted by meteor
A hundred people can't be wrong
Yes, the superclusters have a filamentary structure, but in a circular/spherical pattern, not as straight lines. Your argument fails anyway, since the Virgo cluster does not look like two fingers pointing at earth. It is spherically distributed like all the other clusters. See this map .. http://www.anzwers.org/free/universe/virgo.htmlOriginally posted by meteor
The structure of the universe is bubblelike. But the superclusters are located in the tangent points of the bubbles, and indeed have a filamentary structure.One very famous filamentary structure is the Great Wall
Subtillion, give up. You are one against a hundred. A hundred people can't be wrong
You can't force someone to want to understand the mechanisms of physical reality.
Do you not understand that the "expansion of space interpretation" IS the "Doppler interpretation of the Hubble Red-shift"? They are the same thing.
Originally posted by Hurkyl
A very astute, if ironic, observation.
Originally posted by Hurkyl
Not so. With the doppler effect, all of the redshifting occurs at the source. With expansion of space, the redshifting occurs as the light travels through space.
(not to mention the trivial fact that the Doppler interpretation makes no sense in general relativity since different coordinate charts would yield different relative velocities)
Originally posted by Hydr0matic This is subtillioN's point - the redshift mapping gives incorrect results.
A hundred people can't be wrong ? .. please ...
Originally posted by Brad_Ad23
I most agree with Warren on this one as Hurkyl pointed out. The Einstein equation is the basis of general relativity. A lack of actually knowing what it is, or having studied it and what it does, you cannot talk about the theory. All you can talk about is what you have read about the theory from sources. An actual understanding of the equation and you can reach the same conclusions and have a much much better understanding of General Relativity.
Originally posted by meteor
One very famous filamentary structure is the Great Wall
Originally posted by Brad_Ad23
Again you fail to realize that it is indeed relevant. But you kinda sort of need to understand the equations and the mechanisms first.
Originally posted by Brad_Ad23
Relevant to physical reality.
example: GR predicts orbiting bodies (such as pulsars for example) will radiate away energy and slow down. This has been observed and is true.
Or that time is affected by one's location in a gravitational field, also proven true.
Or that gravity redshifts light trying to escape, also shown to be true.
All this is predicted from GR (and yes, on low energy scales by Newtonian physics), and is very much physically relevant.
Originally posted by Brad_Ad23
Yes of course, they must be. I guess that is why based on these interpretations of it we have been able to conduct sucessful experiments that we know what is going on with. Because all our interpretations are wrong.
Originally posted by Brad_Ad23
Listen closely.
Just having math and number does not tell us what sort of experiments to do or what happens. We MUST interpret what these equations actually are talking about to perform experiments and collect meaningful data.
Originally posted by subtillioN
I completely agree with that. Can you point out any instance in which the Relativity interpretations were the only possible interpretations which could have led to a successful experiment?
Originally posted by Brad_Ad23
The case of gravitational redshifting, the rate of pulsar slowdown, gravity fields affecting the rate of time passage, etc.
You claim these come from the equations...yet you fail to actually know the Einstein Equation...interesting.
Now how is it that this model and our interpretation of the equations (which I might add those equations that dictate this and that have to be interpreted :) can be wrong then when they give us the right answer?
Now then, I do have to say to an extent I must agree that GR is not THE final answer. It is merely a model, like anything else in physics. It is not the last word. And for the very large part, physicists are aware of this. BUT, it is the most accurate and best model we have to date, and there are certain characteristics (essentially GR has to be an approximation of what would replace it and the best mechanism the theoretcial physics community has up is what will someday be quantum gravity.
Originally posted by r637h
1] I wrote that I would give examples of Newtonion complexity and Relativistic simplicity:
Newtonian complexity: Nothing could be more agonizingly complex (without a computer) than the laborious Newton(-Rapheson) numerical method of calculus that was used to confirm that the path of Halley's Comet was an ellipse and had a definite period (in 16-something) Newton told Halley how to do it; Mrs. Halley did most of the calculating, poor thing.
Relativitistic simplicity: Not to mention E=mc^2. Einstein's Field Equations are "relatively" simple.
2] Center of the Universe? I commend to you the modest dissertation: "Relativity: Special and General Theory," written by one A. Einstein 83 years ago. No one has ever disproven his macrocosmic assertions.
He deals with Newtonian difficulties in classical mechanics applied to cosmic phenomena in Part Three, Chapter XXX. i.e., There ain't no center to the Universe.
Originally posted by r637h
" Once more, into the Breach..."
1] For all I know there may be classical solutions for the derivation of e=mc^2, but it is a "relative" equation and Einstein used "relative methods" to derive it.
2] The only experimental evidence that Einstein cites in "Relativity:..." is the Mercury perihelion thing, and that is very convincing. (Appendix D?)
4] I guess there's an insoluble disagreement here:
Would it be fair to summarize? If the Universe is Euclidian, then it can have a center; if it is non-Euclidian, then it cannot.
Originally posted by r637h
King's X. I give up. I'd sooner try herding cats.
Thanks, Rudi