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The nature of the universe: Ye cannae change the laws of physics | The
Economist "What they found shocked them. The further back they looked with the VLT, the larger alpha seemed to be—in seeming contradiction to the result they had obtained with the Keck. They realised, however, that there was a crucial difference between the two telescopes: because they are in different hemispheres, they are pointing in opposite directions. Alpha, therefore, is not changing with time; it is varying through space. When they analysed the data from both telescopes in this way, they found a great arc across the sky. Along this arc, the value of alpha changes smoothly, being smaller in one direction and larger in the other. The researchers calculate that there is less than a 1% chance such an effect could arise at random. Furthermore, six of the quasars were observed with both telescopes, allowing them to get an additional handle on their errors. If the fine-structure constant really does vary through space, it may provide a way of studying the elusive “higher dimensions” that many theories of reality predict, but which are beyond the reach of particle accelerators on Earth. In these theories, the constants observed in the three-dimensional world are reflections of what happens in higher dimensions. It is natural in these theories for such constants to change their values as the universe expands and evolves. " http://www.economist.com/node/169411...41123&fsrc=rss |
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Dear Yousuf Khan:
On Sep 2, 6:34*pm, Yousuf Khan wrote: The nature of the universe: Ye cannae change the laws of physics | The Economist "What they found shocked them. The further back they looked with the VLT, the larger alpha seemed to be—in seeming contradiction to the result they had obtained with the Keck. They realised, however, that there was a crucial difference between the two telescopes: because they are in different hemispheres, they are pointing in opposite directions. Alpha, therefore, is not changing with time; it is varying through space. When they analysed the data from both telescopes in this way, they found a great arc across the sky. Along this arc, the value of alpha changes smoothly, being smaller in one direction and larger in the other. The researchers calculate that there is less than a 1% chance such an effect could arise at random. Furthermore, six of the quasars were observed with both telescopes, allowing them to get an additional handle on their errors. If the fine-structure constant really does vary through space, it may provide a way of studying the elusive “higher dimensions” that many theories of reality predict, but which are beyond the reach of particle accelerators on Earth. In these theories, the constants observed in the three-dimensional world are reflections of what happens in higher dimensions. It is natural in these theories for such constants to change their values as the universe expands and evolves. "http://www.economist.com/node/16941123?story_id=16941123&fsrc=rss There's a fine kettle of fish! Let's add some (closely) associated papers. http://arxiv.org/abs/1008.3957 http://arxiv.org/abs/1008.3907 Wonder if the purported variation of radioactive isotopes is associated too... Yousuf, I think we may be on the doorstep of "interesting times". David A. Smith |
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On 9/2/2010 10:32 PM, dlzc wrote:
There's a fine kettle of fish! Let's add some (closely) associated papers. http://arxiv.org/abs/1008.3957 http://arxiv.org/abs/1008.3907 Yes, kettle of fish indeed. Wonder if the purported variation of radioactive isotopes is associated too... I doubt it, it would have more to do with neutrinos from the Sun. Yousuf, I think we may be on the doorstep of "interesting times". David A. Smith No more than the last couple of decades. Yousuf Khan |
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On 02/09/2010 9:34 PM, Yousuf Khan wrote:
The nature of the universe: Ye cannae change the laws of physics | The Economist http://www.economist.com/node/169411...41123&fsrc=rss Here's another article about it, this time from a Physics-related publication. Changes spotted in fundamental constant - physicsworld.com "The discovery – dubbed by one physicist not involved in the work as the "physics news of the year" – is further evidence that α may not be constant after all. If correct, the conclusion would violate a fundamental tenet of Einstein's general theory of relativity. The nature of the asymmetry in α – dubbed the "Australian dipole" – could also point scientists towards a single unified theory of physics and shed further light on the nature of the universe. " http://physicsworld.com/cws/article/news/43657 Yousuf Khan |
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Dear Yousuf Khan:
On Sep 2, 8:35*pm, Yousuf Khan wrote: On 9/2/2010 10:32 PM, dlzc wrote: There's a fine kettle of fish! Let's add some (closely) associated papers. http://arxiv.org/abs/1008.3957 http://arxiv.org/abs/1008.3907 Yes, kettle of fish indeed. Wonder if the purported variation of radioactive isotopes is associated too... I doubt it, it would have more to do with neutrinos from the Sun. The same difference in atomic decay rates is present northern to sourthern hemisphere too. God, I hope its not a "transfer standard" problem... Yousuf, I think we may be on the doorstep of "interesting times". No more than the last couple of decades. David A. Smith |
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On Sep 2, 7:34*pm, Yousuf Khan wrote:
The nature of the universe: Ye cannae change the laws of physics | The Economist "What they found shocked them. The further back they looked with the VLT, the larger alpha seemed to be—in seeming contradiction to the result they had obtained with the Keck. They realised, however, that there was a crucial difference between the two telescopes: because they are in different hemispheres, they are pointing in opposite directions. Alpha, therefore, is not changing with time; it is varying through space. When they analysed the data from both telescopes in this way, they found a great arc across the sky. Along this arc, the value of alpha changes smoothly, being smaller in one direction and larger in the other. The researchers calculate that there is less than a 1% chance such an effect could arise at random. Furthermore, six of the quasars were observed with both telescopes, allowing them to get an additional handle on their errors. If the fine-structure constant really does vary through space, it may provide a way of studying the elusive “higher dimensions” that many theories of reality predict, but which are beyond the reach of particle accelerators on Earth. In these theories, the constants observed in the three-dimensional world are reflections of what happens in higher dimensions. It is natural in these theories for such constants to change their values as the universe expands and evolves. "http://www.economist.com/node/16941123?story_id=16941123&fsrc=rss In about 1981, I first conceived of a model for the atom where the electrons would be ordered in a spinning ring that precessed to sweep out a sphere. Since a spinning ring of electrons must create a magnetic field at right-angles to its center, I started looking out for parallels. In 1984 the VLA discovered a huge magnetic arc rising at right-angles to the center of the Milky Way. Look out Science- here come the big radio telescopes!! ![]() john galaxy model for the atom |
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On 03/09/2010 12:03 PM, dlzc wrote:
Dear Yousuf Khan: On Sep 2, 8:35 pm, Yousuf wrote: On 9/2/2010 10:32 PM, dlzc wrote: Wonder if the purported variation of radioactive isotopes is associated too... I doubt it, it would have more to do with neutrinos from the Sun. The same difference in atomic decay rates is present northern to sourthern hemisphere too. God, I hope its not a "transfer standard" problem... What's a "transfer standard" problem? Yousuf Khan |
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Dear Yousuf Khan:
On Sep 3, 10:50*am, Yousuf Khan wrote: On 03/09/2010 12:03 PM,dlzcwrote: On Sep 2, 8:35 pm, Yousuf *wrote: On 9/2/2010 10:32 PM,dlzcwrote: Wonder if the purported variation of radioactive isotopes is associated too... I doubt it, it would have more to do with neutrinos from the Sun. The same difference in atomic decay rates is present northern to sourthern hemisphere too. *God, I hope its not a "transfer standard" problem... What's a "transfer standard" problem? In metrology, you have to make a "duplicate" of some standard measurement, and transfer it to the instruments you actually use to make measurements ("Paris" to Austrailia, say). Then you check and make sure they (the instrument and the transfer standard) agree periodically, and update your transfer standard periodically as well. If one "hemisphere" has different measurements for "everything", they may simply have a metrology problem, and no new physics is required. This sort of problem is why the historical measurements of c were all over the place (at some scales), for example. Be a shame if it were that simple. I think we'd need to swap researchers, next. David A. Smith |
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Yousuf Khan wrote:
[...] 1) "The Economist" 2) The systematic errors involved in determining the fine structure constant from quasars are huge. I've read enough papers on this to be sick and ****ing tired of aussies announcing how the fine structure constant isn't. |
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