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Title: Physics laws flawed (Dr Michael Murphy is part of a team that has, over recent years, uncovered surprising and controversial evidence suggesting the laws of physics may have been changing through cosmic time. )
Source: [None]
URL Source: http://www.sciencealert.com.au/news/20071012-16699-2.html
Published: Dec 13, 2007
Author: n
Post Date: 2007-12-13 11:26:08 by gengis gandhi
Keywords: None
Views: 2086
Comments: 89

Physics laws flawed E-mail to a Friend Monday, 10 December 2007 Swinburne University

A Swinburne astrophysicist has leapt another hurdle in the path to proving that our fundamental theories of physics are not what they seem.

Dr Michael Murphy is part of a team that has, over recent years, uncovered surprising and controversial evidence suggesting the laws of physics may have been changing through cosmic time. In this latest move, Murphy has debunked a study which claimed to disprove his findings.

Murphy’s research into the laws of Nature goes back eight years, and concerns our understanding of electromagnetism, the force of nature that determines the sounds we hear, the light we see, and how atoms are held together to form solids. Through the study of electromagnetism in galaxies ten billion light years away, he has challenged the fundamental assumption that the strength of electromagnetism has been constant through time.

“Back in 2001 we published evidence showing a small change in the fine structure constant, the number that physicists use to characterise the strength of electromagnetism,” Murphy said.

“Even though the change that we think we see in the data is quite small, about five parts in a million, it would be enough to demonstrate that our current understanding must in fact be wrong. It’s an important discovery if correct. It suggests to physicists that there’s an underlying set of theories we’re yet to broach and understand.”

Physicists have been chasing results like these for a number of years, but since 1999, Murphy and his co-researchers have been ahead of the pack. They’ve published a series of observations from the Keck Telescope in Hawaii as further evidence of a varying fine structure constant. But, a few years ago, another research team claimed that data from a different telescope contradicted Murphy’s observations.

However, he’s been able to prove that the contradictory work itself was flawed. “We’ve shown that the way the data was analysed was faulty,” he said. “Their procedures were faulty so the numbers that came out are meaningless. Our paper points this out. When you replicate their analysis and fix their problems, you get a very very different answer indeed.”

Murphy has a ‘comment’ about this latest work in this week's issue of the journal Physical Review Letters. It’s the most difficult journal for physicists to get published in, and is the one they turn to for important results in their field.

This latest step is not the end of the road though in convincing scientists across the world that they need to rethink their ideas about electromagnetism. Even though this study also produced results that agree with his initial Keck findings, Murphy said there’s still work to be done.

“There are some problems that need addressing,” he said. “It’s quite a surprising result and one that probably many people need a lot more convincing on. It will take some time, but we’re doing that job.”

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Begin Trace Mode for Comment # 48.

#1. To: gengis gandhi (#0)

“Back in 2001 we published evidence showing a small change in the fine structure constant, the number that physicists use to characterise the strength of electromagnetism,” Murphy said.

Although the value of a "constant" might change due to shifting gravitational forces and space-time distortions, the underlying relations in a physical law remain unchanged.

FormerLurker  posted on  2007-12-13   11:31:12 ET  Reply   Untrace   Trace   Private Reply  


#2. To: FormerLurker (#1)

Although the value of a "constant" might change due to shifting gravitational forces and space-time distortions, the underlying relations in a physical law remain unchanged.

If a "constant" chances then it is not a constant. That in itself shows that the physics laws are flawed to some degree. I don't doubt that we have very much to discover about physical laws. Very much indeed.

RickyJ  posted on  2007-12-13   12:05:28 ET  Reply   Untrace   Trace   Private Reply  


#39. To: RickyJ (#2)

I don't doubt that we have very much to discover about physical laws. Very much indeed.

Personally I think we are due for a major breakthrough in physics and cosmology.

farmfriend  posted on  2007-12-16   16:18:48 ET  Reply   Untrace   Trace   Private Reply  


#40. To: farmfriend (#39) (Edited)

I don't know of anyone claiming that quantum gravity has always had a re-organizational effect in a cosmologically-scaled cyclic cooling process. It may be I'm a lonely nobody with this belief.

nobody  posted on  2007-12-16   16:28:33 ET  Reply   Untrace   Trace   Private Reply  


#41. To: nobody (#40)

Have you read this article?

farmfriend  posted on  2007-12-16   16:30:44 ET  Reply   Untrace   Trace   Private Reply  


#42. To: farmfriend (#41) (Edited)

No, I haven't. Does it mention quantum gravity? I tend to think light and matter are basically eventually decomposable into gravitons, in some sense. How one goes from supposedly spin-2 particles (gravitons) to spin-1 particles (photons) is what I was thinking I should understand. Not sure if gravity can be carried outside of photons if the lowest possible photon energies (frequencies) are considered, but supposedly it can. Could a pair of photons be a graviton? I don't know. A photon (gamma ray) can be transformed into an electron-positron pair, usually quickly self-annihilating. If there are multiples of such electron-positron pairs nearby, a pair may not end up being quickly annihilated inside the bunch. From light thus one gets stable particles, and they have mass, supposedly a source of gravitons. That, I guess, closes the simplest photon-graviton transformation loop.

A sufficient amount of separated anti-matter could run for a while in its own loop, the same way as matter does, I suppose. Maybe that is responsible for accumulations of so- called "dark matter." I could envision the supposed re- organizational effect of quantum gravity is to stratify anti-matter and matter on cosmological scales mostly separately but still intermixedly, towards forming a sort of ultra-long standing wave. By my way of looking at it, all this scenario requires a preceding phase of massive non-local (cosmologically- speaking) (re)compression forces if significant amount of matter and anti- matter are to separately (re)accumulate.

nobody  posted on  2007-12-16   16:38:21 ET  Reply   Untrace   Trace   Private Reply  


#43. To: nobody (#42)

Does it mention quantum gravity?

I don't think so. Just thought you might be interested. So far you are over my head but I do find it interesting. I'll have to re read your posts.

Here is another one I like. I find the concept interesting.

Nature's Mind: the Quantum Hologram

farmfriend  posted on  2007-12-16   19:46:26 ET  Reply   Untrace   Trace   Private Reply  


#44. To: farmfriend (#43)

I should've written "from outside the observable universe" rather than "non- local" there. I'm trying to keep my comments here close to cosmological ideas and non-locality in quantum physics is mostly a separate subject. I do like to shift my focus around, though, so maybe I can add something on some other thread. The link mentions holographic theories in physics, and there is a holographic theory relating black holes and information in string theory, IIRC. Holographic storage, annealing (with quantum gravity, an annealing process could occur on a cosmic scale) and neural nets are all related topics, perhaps interestingly enough.

nobody  posted on  2007-12-17   0:04:40 ET  Reply   Untrace   Trace   Private Reply  


#45. To: nobody (#44)

One of the scientists I talk to mentions periodically that he believes our notions on how the sun works are wrong. I've tried to get him to elaborate but so far I'm unsuccessful.

farmfriend  posted on  2007-12-17   0:47:20 ET  Reply   Untrace   Trace   Private Reply  


#46. To: farmfriend (#45)

The structure, dynamics and evolution of stars is a complex field I know practically nothing about.

I may be wrong about the lensing capability of Hoag's galaxy, but I'm relatively sure that it is framing an Einstein ring in the open portion, and I may have the basic quantum gravity aspect of Hoag's galaxy correct.

nobody  posted on  2007-12-17   2:34:35 ET  Reply   Untrace   Trace   Private Reply  


#47. To: nobody (#46)

And you could very well be right. You don't have to worry about grants and your colleagues so you are free to think.

farmfriend  posted on  2007-12-17   3:21:59 ET  Reply   Untrace   Trace   Private Reply  


#48. To: farmfriend (#47) (Edited)

The idea of a quantum gravity redshift is also a bit less sure than the basic idea of quantum gravity undergoing phase-reversals, which I think is being used elsewhere, though I have not seen it applied to explain any galaxy's appearance.

Einstein rings are usually bluer than the lensing object, although I have seen some other distant Einstein rings from Hubble that are red. The Einstein ring image held within the opening in Hoag's galaxy appears to be quite large and well defined for as red as it is. That is why I get the impression that Hoag's galaxy is gravity-lensing the Einstein ring system in a unique way.

nobody  posted on  2007-12-17   3:40:34 ET  Reply   Untrace   Trace   Private Reply  


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