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Bjoern Feuerbacher wrote in message
om... wrote in message ... In sci.astro Alan Morgan wrote: It simply arises directly and obviously out of a misintpretation of the Red Shift as being due to a Doppler shift. To what should we ascribe it? Sunburn? Cosmic embarassment? It's believed to be due to redshift because (a) that fits the facts and (b) none of the alternatives do. My, my. Just can't help yourself. Just have to be vain and arrogant! No wonder Ed feels like he does! :-) I think in your sentence above you really meant to say that it [redshift] is due to Doppler shift because (a) that fits the facts and (b) none of the alternatives do. Sure, that was apparently the case so far. But once string theory opened the possiblity of multidimensional reality, Err, you *do* know that according to string theory, the extra dimension are "curled up" (compactified) on the Planck scale, don't you? Precisely how does a 'dimension' physically 'curl up'? And how does it know when to stop curling? one needs to go back and re-think old views rather than simply make snide comments to defend traditional theories. Personally I haven't seen much evidence that the universe is expanding if one discards red shift data. What about the cooling of the CMBR? There is evidence that it was "hotter" in the past; see e.g. http://www.astro.ucla.edu/~wright/stdystat.htm#Tvsz. "In addition, the temperature of the cosmic background can be measured in some very distant clouds that produce absorption lines in the spectra of quasars. The neutral carbon atoms in these clouds are excited to an excitation temperature that can be measured using line ratios. These excitation temperatures are upper limits to the CMB temperature and are shown as triangular data points at right." 2 specially-selected data points! Whose only advantage is that they "miss" the BB prediction. Sure, if you play with coarse enough "upper bounds" you can miss your target enough to claim that it isn't disproved. Then there's: "In some clouds corrections for other sources of excitation can be made, giving a direct measure of TCMB, shown as a round data point. This data agrees very well with the evolution expected in the Big Bang model: TCMB = To(1+z), which is shown as the red line in the figure." If you get to "correct" the data for unnamed and undefined processes, you can match anything. And then you plot 4 whole data points. Too bad Ned didn't bother with any references for any of these. I think this is why "tired light" theories are popular (though such light properties do not appear to have ever been measured). Why do you think that "tired light" theories are still popular? I know no cosmologist who still thinks that such theories are viable; do you? That's because you define a 'cosmologist' as someone who believes in the big bang. Have you ever read the following page? http://www.astro.ucla.edu/~wright/tiredlit.htm As you well know*, Dr. Wright has already been shown to be either less than principled or less than competent in his 'disproofs' of theories in his webpages (and if the latter, he is also unwilling to correct known mis-statements). See: http://www.google.com/groups?selm=vk....supernews.com http://www.google.com/groups?selm=vk....supernews.com http://www.google.com/groups?selm=vk....supernews.com http://www.google.com/groups?selm=vk....supernews.com http://www.google.com/groups?selm=vk....supernews.com http://www.google.com/groups?selm=vk....supernews.com http://www.google.com/groups?selm=vk....supernews.com and http://www.google.com/groups?selm=vk....supernews.com At least in Ned's anit-TBBNH thread, Ned referenced the opposing view. (He screwed it up, royally, but at least it was possible to check his statements.) In the 'tired light' page, there's not a single reference to an actual tired-light theory paper or book. Why don't you at least identify what *you* think is correct about Ned's page on tired light? - - - - - - * From your achingly quibbly defense of Ned's 'rewording' of opposing theories. At least someone did, since Ned wasn't willing to respond publicly or privately -- except a one-shot repeat in defense of French's travesty. -- greywolf42 ubi dubium ibi libertas {remove planet for return e-mail} |
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In sci.astro Bjoern Feuerbacher wrote:
Err, you *do* know that according to string theory, the extra dimension are "curled up" (compactified) on the Planck scale, don't you? Err, sure I do. So let me ask this. Does it matter from our viewpoint in three-space that the other dimension(s) are "curled up"? I mean the way things appear to us. I'm suggesting that from our viewpoint it doesn't matter. If it did, then it wouldn't really be another dimension, would it? I do think string theory is a gigantic leap forward toward a unified field theory, and is a "good first step" toward the debunking of Quantum Mechanics, but it would be silly to proclaim the theory as totally correct at this point. But I do say that string theory is pointing in ways I believe are fundamentally correct. Why do you think that "tired light" theories are still popular? I know no cosmologist who still thinks that such theories are viable; do you? No, I don't. I think it's a clever theory and also points to a psychology that says that the Big Bang idea is somehow hard to swallow, but unfortunately "tired light" requires properties of photons that remain largely unobserved to date. Have you ever read the following page? http://www.astro.ucla.edu/~wright/tiredlit.htm Yes, I have. Decent page. But then, my hypersphere theory hasn't been "proved" either. Oh, nice, another (apparenly) layperson with an alternative theory to the Big Bang (who, as usual, doesn't know that the red shift isn't claimed to be due to the Doppler effect). Well you can play word games all you like and chase your tail around Einsteinian 4-space trying to justify Red Shift, but the bottom line is that it isn't about word games it's about velocities. Without velocities, there is no Big Bang. Period! It's true I do not make a living from astronomy and my training is not in that discipline, however, if you think that this means I have no training, that would be incorrect. I presume you are attempting to suggest that new ideas are ONLY allowed to come from the science establishment. Isn't that just a tad arrogant? I take it you want all comets and other bodies discovered by "lay" astronomers kept out of offical catalogs as well? Does your theory explain all the observations? What about the following one, for example? http://xxx.lanl.gov/abs/astro-ph/0005006 Dunno. I'll have to go give it a peer. Sorry, can't do that from here... BTW, theories are never proved in science, didn't you know that? Yes I do, and have been loudly stating so. But you'd never guess it the way that establishment science spokesmen go on and on pretending that various theories are estabished facts and above being questioned. Evolution is probably by far the worse example. If it were, then why would I be discussing it here? To convince other people? Do you mean to convince other people that my theory is totally correct? Hardly. But if you mean to convince other people to simply take a fair look at what I'm saying and add their 2 cents to the mix (Positive or negative, it really doesn't matter so long as it's constructive and fair) then yeah, I AM trying to convice them to do that. bjacoby -- Due to SPAM innundation above address is turned off! |
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"g" == greywolf42 writes:
g Bjoern Feuerbacher wrote in g message om... Err, you *do* know that according to string theory, the extra dimension are "curled up" (compactified) on the Planck scale, don't you? g Precisely how does a 'dimension' physically 'curl up'? And how g does it know when to stop curling? This is of course an attempt to translate mathematics to English. A useful analogy might be to consider viewing a highway from a jet. If the altitude of the jet is large enough, the highway will appear to have essentially no width, even though we know that it does. What about the cooling of the CMBR? There is evidence that it was "hotter" in the past; see e.g. http://www.astro.ucla.edu/~wright/stdystat.htm#Tvsz. [quote from Wright's Web site] g 2 specially-selected data points! Whose only advantage is that g they "miss" the BB prediction. Sure, if you play with coarse g enough "upper bounds" you can miss your target enough to claim that g it isn't disproved. The upper limits are only a factor of two above the predicted value. That's hardly "coarse," certainly not by astronomical standards. g Then there's: "In some clouds corrections for other sources of excitation can be made, giving a direct measure of TCMB, shown as a round data point. This data agrees very well with the evolution expected in the Big Bang model: TCMB = To(1+z), which is shown as the red line in the figure." g If you get to "correct" the data for unnamed and undefined g processes, you can match anything. And then you plot 4 whole data g points. Too bad Ned didn't bother with any references for any of g these. Ignoring the bibliography that is linked at the bottom of this document, I'll point out ADS URL:http://adsabs.harvard.edu/abstract_service.html and astro-ph URL:http://arXiv.org/. One can go to either of these places and find the original papers. Within 30 seconds, I found a couple of papers on ADS by searching on "cosmic microwave background" AND "temperature" AND "absorption lines." I'm sure that one can find more papers with a bit more effort. Why do you think that "tired light" theories are still popular? I know no cosmologist who still thinks that such theories are viable; do you? g That's because you define a 'cosmologist' as someone who believes g in the big bang. Interestingly, Narlikar & Padmanabhan (2001, Ann. Rev. Astron. Astrophys.)---Narlikar being no fan of the Big Bang model himself---make no mention of "tired light" in their review article entitled "Standard Cosmology and Alternatives." -- Lt. Lazio, HTML police | e-mail: No means no, stop rape. | http://patriot.net/%7Ejlazio/ sci.astro FAQ at http://sciastro.astronomy.net/sci.astro.html |
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In sci.astro Bjoern Feuerbacher wrote:
I've got news for you: cosmologists don't claim that the Red Shift is due to a Doppler shift. That's only what you find in most pop science descriptions of the Big Bang Theory. In reality, cosmologists claim that the Red Shift is due to the expansion of space itself (wave lengths get stretched). I recommend the book "The early universe" by Kolb&Turner to you. Word games. There are different ways to calculate things but the bottom line is if there is no velocity, there is no "Big Bang" I see the difference between things moving in space and things being fixed in space which itself is supposed to be "moving" as being only a slightly different viewpoint, but basically these never question the fundamental Velocity assumption. There are lots of theories and calculations, but I've yet to see that "space meter" with a dial that shows just how fast space is moving where you are standing. Oh, wait, I get it. Red Shift is that meter! Just chasing your own tail! At least the "tired light" folks and I are at making the interesting suggestion that the apparent wavelength shift just perhaps might not be due to velocity at all. Without velocity what does a cosmologist have left? -- Due to SPAM innundation above address is turned off! |
#17
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![]() "greywolf42" writes: Bjoern Feuerbacher wrote in message om... [ ... ] What about the cooling of the CMBR? There is evidence that it was "hotter" in the past; see e.g. http://www.astro.ucla.edu/~wright/stdystat.htm#Tvsz. "In addition, the temperature of the cosmic background can be measured in some very distant clouds that produce absorption lines in the spectra of quasars. The neutral carbon atoms in these clouds are excited to an excitation temperature that can be measured using line ratios. These excitation temperatures are upper limits to the CMB temperature and are shown as triangular data points at right." 2 specially-selected data points! Whose only advantage is that they "miss" the BB prediction. Sure, if you play with coarse enough "upper bounds" you can miss your target enough to claim that it isn't disproved. You have erroneously supposed that the quoted upper limits were "played with." Upper limits are what they a a constraint in parameter space. If you don't find the upper limits interesting, that is your own problem. ... Then there's: "In some clouds corrections for other sources of excitation can be made, giving a direct measure of TCMB, shown as a round data point. This data agrees very well with the evolution expected in the Big Bang model: TCMB = To(1+z), which is shown as the red line in the figure." If you get to "correct" the data for unnamed and undefined processes, you can match anything. And then you plot 4 whole data points. Too bad Ned didn't bother with any references for any of these. You have erroneously supposed that the corrections are unnamed or undefined. The discussions in the literature of the observations and analysis are in fact quite detailed and extensive [ see refs. ]. There are also more measurements in the literature than Wright shows. If you are criticizing *Dr. Wright* for not naming or defining the excitation corrections on his web page, then your criticisms are irrelevant: he is writing a tutorial for the general science public, not a scholarly article. CM References Silva, A. I. & Viegas, S. M. 2002 MNRAS, 329, 135 Srianand, R. Petitjean, P. & Ledoux, C. 2000, Nature, 408, 931 Molaro, P., et al. 2002, A&A, 381, L64 |
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#20
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