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Author | Topic: Misconceptions in Relativity | |||||||||||||||||||
cavediver Member (Idle past 3672 days) Posts: 4129 From: UK Joined: |
Since you stated that this would take eight years of study in math and physics, what can you really hope to accomplish here? An appreciation of how to use journals and citations to gain an understanding of the acceptability of an idea. Furthermore, Slevesque has provided himself just what we needed: an obvious and critical *layman* error on the part of Hartnett to immediately destroy his credibility. Anyone can go look up CMBR at Wikipedia, and see that it does not correspond in any way to what Hartnett said. It is quite possible that Hartnett has since been corrected of error, but that is immaterial. For someone claiming to be a cosmologist, to be ignorant of this fact is like a chemist thinking molecular bonding has something to do with glue. In the case of Carmeli and the "cosmology", it is very difficult to argue at the layman's level. Similarly with Humphreys' cosmology. Have you ever read the back and forth between Don Page and Humphreys? It was exceptionally painful, because Humphreys knows just enough to be able to sound like he know exactly what he is talking about, and I have read several creationists' posts claiming that he won the exchange. But to those of us who actually understand the subject, the issues are blatently clear, and Humphreys just does not get it (or he does, but is in denial.) But to translate the deeper issues into layman language? *shudder*
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Percy Member Posts: 22504 From: New Hampshire Joined: Member Rating: 4.9 |
More information from The First Six Days of the Universe, this is from the conclusion:
Carmeli writes: In conclusion, the lengths of the first six days were enough to accomodate the activities of the creation mentioned in the Bible. Furthermore, since at that time there were no other reference systems (like the present-day one)to compare with, one concludes that the ascertain of the Bible about the six-day creation of the Universe is scientifically valid. And the body of the paper discusses how each day in the Bible is explained cosmologically. The entire paper is pure unadulterated creationism. By the way, you have in other threads advocated a young Earth, yet Carmeli is clearly advocating an old Earth. This is from page 2:
Carmeli writes: We actually know from the study of anthropology and cosmology that any development of the kind mentioned in the Bible takes millions or billions of years. Gee, just like paleontology, geology, radiometric dating, cosmology, and all the rest of science tell us! I think it would be widely appreciated if you could resolve the contradiction in your advocacy for young dates in the Soft Tissue Surviving 65 Million Years? thread with the old dates you're advocating here. Maybe you could propose a thread where you could debate this with yourself. --Percy Edited by Percy, : Grammar.
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slevesque Member (Idle past 4669 days) Posts: 1456 Joined: |
Ok, just to make it clear about the difference between a creationist and a theistic evolutionist
Creationists believe that the 6 days of creation are actual,literal, 24hour days of earth time. The earth is 6000 years old, etc. Theistic evolutionists see the 6 days of creation as figurative,poetic and metaphoric. Thus, for a theistic evolutionist, the days mentioned in the genesis account of creation are actually millions, or in this case, billions of years. Evolution is simply the way God used to create life, etc. So Carmeli is, as I've said in my previous post, a theistic evolutionist. He probably believes that the Bible is the innerrant word of God, but seeing the difference with the creation account and science (such as anthropology), he advocates that God was actually speaking in metaphors, and that the days in genesis are actually billion of years. Only reading his abstract, it is very creationist-like. But reading the rest of the paper, it is clear that he is a advocating a theistic evolutionist approach of the 6 days of creation. Edited by slevesque, : No reason given.
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Son Member (Idle past 3859 days) Posts: 346 From: France,Paris Joined: |
Hmmm, ever heard of Old Earth Creationist?
Btw I didn't see him talking about biological life (only cosmology I think) so we can't say what he really thinks about evolution.
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slevesque Member (Idle past 4669 days) Posts: 1456 Joined: |
Ok, I think it would be pointless to discuss the Carmeli cosmology unless you think you can explain in a way I can understand where he goes wrong. I have my CEGEP physics and maths, which is (I think) equivalent to the first year university knowledge in the US. (educationnal system is different here in quebec)
First, I do not have access to his 1996 publication, only his papers in 2004. He makes no claim that he had predicted acceleration back in 1996, and he does not even cite the 1996 book, despite having it listed in the references! Can you shed any light on this? It is in his book Cosmological Relativity, page 78, section 4.6.this is the preview() Unfortunately, you don't have page 79 in that preview of his book. I would suspect it would be similar to section 4here Harnett said this?? He doesn't have the first fucking clue How can someone write papers on cosmology and not know what the CMBR is? And this is the guy the creationist community is heralding as their new saviour... I followed your advice and went on wikipedia to see what they say about the CMB.
quote: This is what Hartnett said:
quote: Maybe its the language barrier (I speak french), but I don't see where the discrepancy is. What am I missing ?
quote: Hey, if I'm on these forums discussing this with other people, it is precisely because I do NOT want to solely listen to what Hartnett has to say ...
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slevesque Member (Idle past 4669 days) Posts: 1456 Joined: |
Hmmm, ever heard of Old Earth Creationist? Btw I didn't see him talking about biological life (only cosmology I think) so we can't say what he really thinks about evolution. The difference between old-earth creationism and theistic evolutionism is very small. There are so many names for the different positions (progressive creationism, old-earth creationism, young-earth creationism, theistic evolutionism, gap creationism, evolutionary creationism) I use the term theistic evolutionism because I view it as more general. He mentions anthropology as one of the sciences by which we can know that the earth is old, so I would think he does accept evolution. Anyhow, I think it is way less complicated like this: creationist: Young earth-creationismevolutionist: atheistic evolutionism theistic evolutionist: all the others Edited by slevesque, : No reason given.
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Huntard Member (Idle past 2324 days) Posts: 2870 From: Limburg, The Netherlands Joined: |
What you're missing here is that Hartnett says that CMBR comes FROM galaxies, which isn't true, it's leftover radiation from the big bang, and has nothing to do with galaxies.
I hunt for the truth
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slevesque Member (Idle past 4669 days) Posts: 1456 Joined: |
He says it comes from the background of galaxies, not from galaxies. Maybe it is his phrasing, but I understood it as that the CMBR comes from behind the galaxies, and so the galaxies and its dark matter should create gravitationnal lensing on it.
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Percy Member Posts: 22504 From: New Hampshire Joined: Member Rating: 4.9 |
I don't see the relevance of a discussion about who is what kind of evolutionist in a thread about cosmology, but just to correct a severe error:
slevesque writes: Anyhow, I think it is way less complicated like this: creationist: Young earth-creationismevolutionist: atheistic evolutionism theistic evolutionist: all the others There is a very large group who believe in God and accept evolution while not seeing the need for reconciliation between the two (such as those like Carmeli), including myself. AbE: Just read your Message 53, could you not use the "Gen Reply" button when you're making a reply to a specific message? Thanks! --Percy Edited by Percy, : Add AbE comment.
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lyx2no Member (Idle past 4745 days) Posts: 1277 From: A vast, undifferentiated plane. Joined: |
An appreciation of how to use journals and citations to gain an understanding of the acceptability of an idea. I need this. I can only rarely just barely find stuff in journals. Help. It is far easier for you, as civilized men, to behave like barbarians than it was for them, as barbarians, to behave like civilized men. Spock: Mirror Mirror
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lyx2no Member (Idle past 4745 days) Posts: 1277 From: A vast, undifferentiated plane. Joined: |
He says it comes from the background of galaxies, not from galaxies. Maybe it is his phrasing, but I understood it as that the CMBR comes from behind the galaxies, and so the galaxies and its dark matter should create gravitationnal lensing on it. Background, in this case, does not mean behind as it does in a landscape. The people living in the houses on the hills in the background don't see the hills in the background. "Background" radiation is everywhere. Were it not it would look different from different parts of the Universe. A photon from the background radiation passing a galaxy will be lensed. But CMBR photons are pretty much indistinguishable in energy and direction they come from all directions with near perfect smoothness so one would not know what direction it was "supposed" to be coming from. Edited by lyx2no, : Typo. It is far easier for you, as civilized men, to behave like barbarians than it was for them, as barbarians, to behave like civilized men. Spock: Mirror Mirror
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cavediver Member (Idle past 3672 days) Posts: 4129 From: UK Joined: |
Maybe it is his phrasing, but I understood it as that the CMBR comes from behind the galaxies True, I did think of this earlier today, but even if this was his meaning it still suggests a very loose understanding of the CMBR. The CMBR does not emanate from "behind" the galaxies, whatever the hell that means. Anyway, back to this
quote: And your 2005 paper, "Lieu, R, Mittaz, J.P.D., On the absence of gravitational lensing of the Cosmic Microwave Background, ApJ 628(2):583—593, 2005", with its total of four cites, is rather negated by the plethora of papers such as "Antony Lewis, Anthony Challinor, Weak Gravitational Lensing of the CMB, Phys.Rept. 429 (2006) 1-65", with its 70 cites.
In my limited knowledge, I don't think you can rightfully claim that the bullet cluster discovery is emperical proof of the existence of dark matter unless you can answer that question. Consider it answered...
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slevesque Member (Idle past 4669 days) Posts: 1456 Joined: |
I agree that last group envelops maybe too much people, anyhow its pretty much only semantics as long as we are talking the same thing
I try to use the reply button, but I forget sometimes
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slevesque Member (Idle past 4669 days) Posts: 1456 Joined: |
True, I did think of this earlier today, but even if this was his meaning it still suggests a very loose understanding of the CMBR. The CMBR does not emanate from "behind" the galaxies, whatever the hell that means. I agree it makes little sense for those who know exactly what the CMBR really is. But you gotta remember the article was intended for readers who, for the most part, do not have much knowledge in cosmology, and so you can't really go in the details. Its similar to layman's scientific journals calling a gas cloud a ''space blob''.
And your 2005 paper, "Lieu, R, Mittaz, J.P.D., On the absence of gravitational lensing of the Cosmic Microwave Background, ApJ 628(2):583—593, 2005", with its total of four cites, is rather negated by the plethora of papers such as "Antony Lewis, Anthony Challinor, Weak Gravitational Lensing of the CMB, Phys.Rept. 429 (2006) 1-65", with its 70 cites. Consider it answered... Thanks for taking this a bit more seriously, its appreciated. Now first of all, you'll have to excuse me for my lack of english knowledge, but what do you mean by 'cites' ? I didn't read the whole paper on weak gravitationnal lensing of the CMB, as you might guess it gets complicated for me to read technical papers in English. But skipping threw it I noticed this on page 77:
11 Status and applications of CMB lensing 11.1 Observational status At the time of writing there is no detection of lensing of the CMB or of lensing-induced cross-correlation with large scale structure (152). This is expected to change very shortly, either by direct detection of the non-Gaussian signature in the small-scale CMB, or by the improvement to model fitting by using the lensed as opposed to the unlensed CMB power spectra. Current data restrict the amplitude of the lensing effect to be within a factor of three of the expected result, but consistent with zero. However lensing is a robust prediction, so in the next subsections we discuss what new cosmological and/or astrophysical information we might be able to extract from future observations of CMB lensing. The reference (152) lead to this paper, http://arxiv.org/PS_cache/astro-ph/pdf/0406/0406004v2.pdf, which found no detection of lensing. That paper was written in 2004 (and the first one in 2006), and so I was asking myself if it had been observed since that time. Edited by slevesque, : No reason given.
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slevesque Member (Idle past 4669 days) Posts: 1456 Joined: |
Off-topic question here I have been asking myself for quite a while, and I would hope you could answer me CD:
Are the gravitationnal effects of a body instanteneous, or do they propagate at the speed of light ? (or at some other speed)
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