- 8,252
- 2,666
When I referred to the expected shift, what I meant was the red shift we would get were DE and DM not an influence.
Start by listing one...Overdose said:Russ says this isn't the case but i strongly disagree, i could list 100's of people who've ideas have been rejected not because their ideas are not valid but simply because the ideas fly in the face of a great deal of 'accepted thought/scientific dogma'.
I don't want to dwell on this too much (its a pet peve of mine), but from your info there, the plagarism controversy was the biggest I'd heard of, but even that was mostly fringe and even then that has nothing to do with the validity of the theory.TheAntiRelative said:Hehe, okay I'll admit I was taking things to extremities just as I thought you were but here is some stuff I picked up searching around. I don't vouch for validity...
Okay,Can you say more please? Certainly viewing an object through lots of 'space dust' makes the object look redder than it would if there were no dust.
OK, you've lost me here ... 'reddening' is a very different kettle of fish from 'redshift'; the former is simply a greater absorption of shorter wavelengths (any lines in the spectrum of a reddened object remain at the same wavelenghts they'd appear if there were no dust); the latter is the whole spectrum being moved to longer wavelengths. Are you confusing the two perhaps?
Hehe, ignore me.. I was stating the obvious for some reason.what?
I was using a gedanken experiment.No. First, you need to do the calculation; simply using words will lead you to all kinds of unresolvable puzzles.
Hmm, perhaps a short course in modern cosmology would help? Ned Wright's tutorial is a good place to start.Ivan Seeking said:When I referred to the expected shift, what I meant was the red shift we would get were DE and DM not an influence.
Ah, we have a terminology mismatch! I'm not familiar with 'reddening' being called 'redshift' - have you seen this in ApJ papers?TheAntiRelative said:Okay,
Yes, reddening causes preferential scattering of shorter wavelengths and redshift shifts the whole spectrum.
OK; so what's the size of this effect, for the nearest source of high intensity photons traveling through a plasma which has quite a range of temperatures and densities? What would be the size of the effect near a supernova?I am talking about redshift from the compton effect. I guess that it applies primarily to ionized particles but I'm just saying that I have no doubt that the plasma emissions from stars assure that some of the particles are ionized or that there are pockets of electron clouds out there in space and there are some electrons that can be smacked by the photons coming through. In this case it is redshifted across the spectrum because all the photons, regardless of wavelength will transfer some of their energy to the electrons they run into.
I'm very familiar with this nonsense! From what I've read so far, the observational basis for these ideas is weak (and I'm being generous) ... further, if the hypothesised effect were to comprise a significant part of the observed quasar and galaxy and SN and novae (and some isolated stars!) redshifts, then the proponents of the idea have created for themselves a huge headacheGoogle this:plasma redshift
That'll give you boatloads of links and many of them are regarding using it as an alternative to BBT. Somewhere in there you should be able to find the experimental evidence...
And I'm saying that you are free to repeat all the observations and analyses which lead to the mainstream conclusions, and to point out exactly where - and what - the 'misrepresentations' areI was using a gedanken experiment.
What I'm saying is that if something is consistantly misrepresented from the very first observation to the very last. Because it is experimentally re-producable, you would rely upon that falsehood.
Worse, you have also likely thrown not only the Compton effect in the trash can, but also huge sections of QM and GR ... for example, what is a supernova? how does the Sun shine?I'm not questioning the calculation, I'm questioning the thought process used when gathering the data to calculate. (which yes I know that may lead to questioning the validity of G)
Good for you! If only there were more of this attitude!Not that I think everything we know about starlight is wrong, I'm just saying that I never take anything for granted and would like to know what all is considered and how in the process to detemine these things. I'm skeptical of absolutely everything until I've thought it out from beginning to end myself.
Oh one thing occurred to me. Why is it believed that there is little or no dust in the space between galaxies? I mean what data is that assumption based upon?Nereid said:- however, there is apparently little or no dust between galaxies
Hurgh? I'm funcused now...Nereid said:Ah, we have a terminology mismatch! I'm not familiar with 'reddening' being called 'redshift' - have you seen this in ApJ papers?
Hehe, Iamb not a physicist! I'm just a hobbyist. All I know is that the effect exists and behaves in a certain manner that has been documented and received as a part of accepted science.OK; so what's the size of this effect, for the nearest source of high intensity photons traveling through a plasma which has quite a range of temperatures and densities? What would be the size of the effect near a supernova?
Oh, well you've read more about it than me then. My mistake.I'm very familiar with this nonsense!
I think you might misunderstand me. I'm saying that perhaps compton effect and gravitational redshift may be acting like that unknown screen in my analogy. I'd be glad to hear if that's something that's already been considered and proven not to be the case.And I'm saying that you are free to repeat all the observations and analyses which lead to the mainstream conclusions, and to point out exactly where - and what - the 'misrepresentations' are
But perhaps I misunderstand your point; what, specifically, do you feel has been 'consistantly misrepresented from the very first observation to the very last'?
Well I think this is part of a misunderstanding but yes, I'm more than willing to throw out any number of things if evidence to the contrary rears its ugly head.Worse, you have also likely thrown not only the Compton effect in the trash can, but also huge sections of QM and GR ... for example, what is a supernova? how does the Sun shine?
How would you tell if there were any dust?TheAntiRelative said:Oh one thing occurred to me. Why is it believed that there is little or no dust in the space between galaxies? I mean what data is that assumption based upon?
I know that radio galaxies are tooling along crapping out googles of tons of matter into the space between galaxies, so it seems kinda counter-intuitive to think there's nothing in between. So you've piqued my interest now.
Yes and no. Reddening changes the shape of the spectrum we see ... higher frequencies are diminished (the reverse of what you said); with redshift the whole spectrum is shifted 'red-ward'. Thus a look at the wavelengths of the lines quickly tells you what the effect is - if reddening, the lines are at the same wavelength; if redshift they are longer.TheAntiRelative said:Hurgh? I'm funcused now...
Okay I understand reddening as basically a sifting out of higher frequencies.
I understand redshift to be an entire shift of the spectrum toward the red end of the spectrum.
Am I misstating it?
OK. So let's ask that you extend your enthusiasm and curiosity a bit, and do some 'research' - please take the time to learn about the Compton effect wrt the Sun (the local source of high intensity EM, across the whole spectrum) ... what sort of redshift is expected (due to the Compton effect)? what is actually observed? to what extent have astronomers researched this, from the time the Compton effect was first published?Hehe, Iamb not a physicist! I'm just a hobbyist. All I know is that the effect exists and behaves in a certain manner that has been documented and received as a part of accepted science.
OK, so I, Nereid am telling you this has been exhaustively researched and shown - within the limits of observational and experimental capability (note that nothing can be 'proven' in science; please read some of the threads in Philosophy if you'd like to know more) - that it's not the case. Now, if I take you at your word, you won't accept what I say (after all, who is Nereid?), but will take the time and effort to research this ... when you've done so, please let us know what you found.I think you might misunderstand me. I'm saying that perhaps compton effect and gravitational redshift may be acting like that unknown screen in my analogy. I'd be glad to hear if that's something that's already been considered and proven not to be the case.
Indeed. If you have a chance, please have a long chat with a 'real' scientist (you could read ZapperZ's journal - he of the 'physics guru 2004' award here at PF) about this topic. Let us know what you find.I was just making the point that even well meaning and hard working respectable scientist can be fooled by phenomena outside their control and knowledge because the phenomena consistently alters the data.
{this is wrt the extent to which good observational data are inconsistent with QM & GR; specifically, whether what's presented on Reese's website provides a good basis for claiming that there is such good observational data}. So, can you summarise what you think are the good observational results which would lead you to consider throwing out QM and GR (and the Compton effect)? Please be as specific as you can; and anything concrete that you can find on Reese's website that helps you reach your conclusion ... please be sure to let us know what it is.Well I think this is part of a misunderstanding but yes, I'm more than willing to throw out any number of things if evidence to the contrary rears its ugly head.
Nereid said:OK, please do so. Pay particular attention to showing us that the ideas which were rejected were, in fact, 'valid'.
Hmm, maybe you need to devote some of your spare energy to the study of what science actually is! For a start, the idea that you can 'prove' something in science is of historical interest only ... in maths maybe you can 'prove' something; you can't in science. So we're left with theories, hypotheses, models etc ... yep, that's ALL there is! (Oh, and PB of good experimental and observational results).
Could I suggest that you attend a scientific convention? The annual meeting of the AAS perhaps? Or read ApJ? When you've done that, please get back to us with details of how those actively involved in doing science in the field 'treat theories [sic] ... as absolute thruths in an almost quasi-religious mindset'![]()

russ_watters said:Start by listing one...
And please note: simply being "valid" isn't enough - Newton's gravity is valid in its domain of applicability, but it has still been replaced. These ideas must be at least as good as Relativity to be worthy of consideration.
So, just so that I don't misunderstand ... you make a claim ("i could list 100's of people who've ideas have been rejected not because their ideas are not valid but simply because the ideas fly in the face of a great deal of 'accepted thought/scientific dogma'[/color]"), but when challenged to provide support for it, you say you're too busy?Overdose said:Nope haven't got time, and it would be a pointless exercise, it's self evident, id say in the next year you'll stumble across a couple of cases yourself, its not that uncommon.
Hmm, unless I'm mistaken, this is another claim - which I may or may not be interested to discuss with you - but should I challenge your 'dogma', I would be wasting my time because you're too busy? Please note that this is a question.Great well pat yourself on the back for understanding what science is!
I never doubted that scientists don't understand what science is, on a conscious level they clearly do, but the point is we offen don't think about things rationally and objectively, its far easier to catagorize something as a 'belief' somewhere in the back of your mind than it is to know things that 'are probably true but could possibly not' The human mind just isn't acustomed to that way of thinking all the time.
I must be in the slow class today ... I thought I'd suggested that you collect some specific, concrete, objective data - based on your direct experience with real scientists and how they work - and present those to us so we can better understand the validity of your claim. In response to my suggestion, you ask me to 'use [my] eyes and ears' and state that 'dogmatic defense of theories is everywhere to be seen.' Looking out my window, I cannot see any 'dogmatic defence', so am I entitled to conclude that you are exaggerating?Why would i need to do that? just use your eyes and ears man, dogmatic defense of theories is everywhere to be seen.Could I suggest that you attend a scientific convention? The annual meeting of the AAS perhaps? Or read ApJ? When you've done that, please get back to us with details of how those actively involved in doing science in the field 'treat theories [sic] ... as absolute thruths in an almost quasi-religious mindset'
Now you've totally lost me ... are you saying that asking questions and wanting to have things spelt out, chapter and verse, is fundamentalism? Are you claiming that proposals should be accepted without requiring their proponents to provide support for those ideas? For the avoidance of doubt, I have formed the impression that you are uncomfortable with being asked to defend your ideas ... kinda like the pot calling the kettle black? But to be sure I've not misunderstood, would you mind telling us how - in some detail - you feel science should be done?And you've kind of proven my point by getting so worked up over my little bit of arm-chair psychology, you're defending a paradigm as if you're ready to die for it, like some kind of crazed fundamentalist.![]()
Well, what you said to Nereid was The Cop-Out of the Century - but all I asked was for an example. I didn't even ask for proof.Overdose said:Good old russ calling people's bluff with demands of unattainable proof..
After what you so arrogantly and condescendingly said to Nereid about understanding science, I'm surprised you would ask such a rediculously basic question. But I'll deign to answer it: if two theories cover the same ground, the one that covers it better is adopted. Why? Because its more useful - more accurate - more correct - quite simply, better. If a theory that is proposed to replace Relativity doesn't do as much as Relativity, that would quite obviously be a step backwards in our understanding of the way the universe works.why must they be 'as good as relativity to be worthy of consideration" ??
thats either an off hand tactic to shut me up, or you're...
Lol, we are definitely speaking a different language or something. "Higher frequencies (blue) are deminished." That's sifting out higher frequencies to me. Perhaps you are thinking of keeping what is "Sifted-out" instead of throwing it away. :)Yes and no. Reddening changes the shape of the spectrum we see ... higher frequencies are diminished (the reverse of what you said); with redshift the whole spectrum is shifted 'red-ward'. Thus a look at the wavelengths of the lines quickly tells you what the effect is - if reddening, the lines are at the same wavelength; if redshift they are longer.
Do you already know the answer? If so can you give me a link?OK. So let's ask that you extend your enthusiasm and curiosity a bit, and do some 'research' - please take the time to learn about the Compton effect wrt the Sun (the local source of high intensity EM, across the whole spectrum) ... what sort of redshift is expected (due to the Compton effect)? what is actually observed? to what extent have astronomers researched this, from the time the Compton effect was first published?
Well, that may be true since I'll still want more than one guy's word but if you have some reference links it'd make my life easier! :)OK, so I, Nereid am telling you this has been exhaustively researched and shown - within the limits of observational and experimental capability (note that nothing can be 'proven' in science; please read some of the threads in Philosophy if you'd like to know more) - that it's not the case. Now, if I take you at your word, you won't accept what I say (after all, who is Nereid?), but will take the time and effort to research this ... when you've done so, please let us know what you found.
Okay, I'm no proponent of Reese's site so I'm not sure if we aren't misunderstanding each other again.{this is wrt the extent to which good observational data are inconsistent with QM & GR; specifically, whether what's presented on Reese's website provides a good basis for claiming that there is such good observational data}. So, can you summarise what you think are the good observational results which would lead you to consider throwing out QM and GR (and the Compton effect)? Please be as specific as you can; and anything concrete that you can find on Reese's website that helps you reach your conclusion ... please be sure to let us know what it is.
hehehAs to the Compton effect ... I'll politely decline your kind invitation; if others would like to give you something to go study, that'd be good. However, if I did, Overdose (and even you?) could say that I'd be presenting you only 'the dogma', and hiding closets chock-a-block full of skeletons.
Well, then you'll be in for a most disconcerting ride if you choose to study physics in any depth at allTheAntiRelative said:Lol, we are definitely speaking a different language or something. "Higher frequencies (blue) are deminished." That's sifting out higher frequencies to me. Perhaps you are thinking of keeping what is "Sifted-out" instead of throwing it away. :)
And neither would I, ZapperZ, Russ, ... or Einstein, Feynman, Bohr, ... if they were alive!I'm just saying that if significant observational results that were contrary to QM and GR I would have no qualms about throwing out QM and GR for the new model that would have to be constructed...
And I think you have a far too narrow view of both scientists and human nature. For starters, AFAIK, physicists have the same range of personalities as Joe Sixpack and Joan G&T - some are arrogant, some humble; some courageous, some timid; some foolhardy, some cautious; goodness, some may even be saints, and some knaves! Perhaps if you got out more, and actually went to *meet* some of these folk, you might be a little more, shall we say, mature.One thing I would add is that results like that (if they exist) would not all appear at once against such tested and so far reliable theories. They would trickle in one small item at a time. My question is this. If small contrary results begin to trickle in, will they be labeled correctly or will they be brushed off as small anamolies that are more than likely just experimenter effect or other false data? I believe human nature will lead to the more arrogant approach.
Yes ... and no. As I said above, scientists are human, just like you and me - some have been known to stoop to quite underhand and dishonest means to maintain the positions of power and authority; but equally, some have been known to stick tenaciously to their guns, even dig in further despite (because of?) derision and rejection. However, I think you'll find - overwhelmingly (but NOT absolutely) - that good experimental or observational results are held in respect.However, I'm sure that you will argue that the scientific method and scientists themselves are always looking for the truth and accept evidence as it comes. You'll also argue that any scientist would leap at the opportunity to make a name for themself by disproving a "pillar of science" theory.
So, what of the 40-year history of hunting down the 'solar neutrino problem'? It was certainly an anomaly, it was most definitely a very small signal, and some scientists did 'gamble their entire career on some small anomalous evidence' . Also, what of the iconoclasts who have made it to the top? What of those who are at the top who are genuinely delighted to foster new ideas and new ways of looking at old things? You might want to read some biographies ... you could be in for quite a shock (of course, we both know that Overdose wouldn't even consider doing such a thing - he might find his dogma severely challenged).I will then counter that few and far between are those willing to gamble their entire career on some small anomalous evidence. Most humans will doubt themselves when faced with: If this is true then everyone other than me is wrong and I'm the only one that is right.
Again, you're making it far too black & white ... the circumstances and individuals have far, far more diversity and richness than your narrow caricature.You will then say that just posing a theory that is counter to mainstream will not cause a respected scientist to suddenly be labeled a quack. Just look at Einstein.
Well, I'll give you a better one - Wegener; and closer to physics, Chandrasekhar (hint: read up on the limit named after him, and his teacher). But so what? Were you expecting that scientists suddenly became angels when they got their PhDs? And as for your human behaviour, I could ask you to take a look at any large observatory - ground or space-based. You'll find most have something called 'Director's discretionary time' - the Director has a certain amount of time for observations using these immensely expensive instruments, to use as (s)he sees fit, no questions asked. Now, what the Directors actually *do* with that time is almost always described in the annual reports of those observatories - take a look sometime, it makes of interesting reading.And I'll say, just look at Nikola Tesla. (to which you'll think... He wasn't really a scientist though, he's just an inventor that went off the deep end)
And then I'll run out of references even though I've watched the same behavior happen in every group of humans from all walks of life about a variety of subjects.
Well it seems that we doAnd we'll eventually come the the point at which I believe we just have completely different views of human nature and you believe that I could use a few visits with a qualified professional to deal with my paraniod delusions.
If I may generalise, you expect all scientists to be saints and not human (or completely cynical and hypocritical), and I claim that a detailed examination of what scientists (collectively and individually) actually *do* shows them to be neither angels nor lying politicians.Well, then you'll be in for a most disconcerting ride if you choose to study physics in any depth at all . For example, what does the 'colour' force have to do with colour? Why is Pluto called a planet and not just the largest plutino?
russ_watters said:You don't see any contradictions in that post, do you...? How about:
-"the big bang theory should have never attained the status and credibility it did"
is contradictory to:
-"But as useall the majority are more interested in preserving their sacred doctrines"
and:
-"Here's to preserving the status quo"
So I ask: how did the BBT attain status and credibility if the scientific community likes to preserve the status quo? How did Relativity become the 'dogma' some people call it today, if in 1900, pretty much every scientist supported ether theory?
The science-is-dogma opinion is self-contradictory at face value.