#1
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Random thoughts..
On reading various groups around these parts, there seems not to be one for
speculation on general science things to do with space and cosmology. It almost seems like there is no way for thinkers who may not be actual scientists, to put ideas out there which may or may not be considered daft. It occurred to me that one could actually use things like the station to check some of the more outlandish stuff out. Mainly its large mass and being man made and manned make it ideal I'd have thought to probe things like the nature of mass, so called dark energy etc. Anyway, I'll stick a few seemingly random thoughts here and see if anyone is interested.. We cannot see dark matter and dark energy. This is because, in the dimensions and universe we are in, they are not directly visible, but their effect is. After all, Gravity is still defying attempts to find its origin. What if the universe has a kind of non linear bias applied from outside which makes things the way they are. it would be very hard to detect that source. On a more flippant note. If there were any creatures on mars, far from being little green men, I spect they would have no green perception, maybe no eyes at all, what would be the point as they will be living deep underground. What is there that is green on Mars anyway? grin Brian -- Brian Gaff - Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. Blind user, so no pictures please! |
#2
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Random thoughts..
Brian Gaff wrote:
Anyway, I'll stick a few seemingly random thoughts here and see if anyone is interested.. We cannot see dark matter and dark energy. This is because, in the dimensions and universe we are in, they are not directly visible, but their effect is. After all, Gravity is still defying attempts to find its origin. What if the universe has a kind of non linear bias applied from outside which makes things the way they are. it would be very hard to detect that source. You're hitting on a sore point with me that I've gone into before in a previous thread in another sci.space. newsgroup (I forget which one at the moment). How's this for an outlandish idea? You cannot see dark matter, nor experience any of its effects directly, even though its abundance supposedly far far far exceeds that of hydrogen in our universe, for the simple reason that it does not exist! Want an even MORE radical idea? How's this one; the universal constant of gravitation "G" is NOT CONSTANT at extremes of space-time taken at either cosmic or quantum values of space-time? One doesn't like that speculation? Why not? Why is it so much more radical than massive masses you cannot see nor detect? To address your point directly, I think you are onto something when you speculate there are non-linear biases in the universe. But think of it coming in from the other direction, rather than from outside, from the inside. Think Planck length [3,4], think positive vacuum energy[5], think of ramifications of quark decay taken to the extreme[6], THE END will not happen because of global warming, it will happen because of the relentless and unrelenting effect of the 2nd Law of Thermodynamics[7], at least until the structure of space-time breaks down at the extreme. Have you ever wondered about why we've never considered why commonplace entropy, while taken for granted by all, ALWAYS wins? I mean without exceptions? Kind of an odd way to run a universe don't you think? I mean after all, how is it possible to get something from the preferred state of nothing? Doesn't this strike you at times as being not only extremely odd but at the same time wonderful in its ramifications? Dark energy likewise is a weak explanation for the fact that perhaps we don't really understand gravitation at the cosmic scale as well as we think we do. We for sure KNOW we don't understand it at the micro-scale (read quantum scale). Doesn't it seem odd to presume an understanding at one end of the scale when we know we don't have a clue at the other? This whole 'dark' business reminds me so much of another pet theory popular at the end of the 19th century, now long since abandoned; that of the "Luminiferous Aether"[1], once considered a given and whose existence was presumed required for the propagation of electromagnetic radiation. After Michelson-Morley[2], we got a little more sophisticated in our understanding of matter and energy. The same needs (and has yet) to happen with gravitation. We clearly don't understand it as well as we have assumed. Classical gravitation, sure. But gravitation at the extremes, not so much. There is so much still to be learned. The problem will be how to test and experiment when dealing with such extremes. The kind of experimentation needed to probe and provide helpful insight will be extremely difficult because of the energies involved. Basing it all on hypothesis alone, well, might as well get out the bones and rattles and also consider theories based around interpretive dance. Dave [1] http://en.wikipedia.org/wiki/Luminiferous_aether [2] http://en.wikipedia.org/wiki/Michels...ley_experiment [3] http://en.wikipedia.org/wiki/Planck_length [4] http://en.wikipedia.org/wiki/Planck_scale [5] http://en.wikipedia.org/wiki/Cosmological_constant [6] http://hyperphysics.phy-astr.gsu.edu...es/qrkdec.html [7] http://en.wikipedia.org/wiki/Second_...thermodynamics |
#3
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Random thoughts..
On Jan 26, 9:21*pm, David Spain wrote:
The same needs (and has yet) to happen with gravitation. Keep an eye on E8. Rumor has it that it is able to account for dark stuff. SU(3) is not enough. /dps |
#4
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Random thoughts..
snidely wrote:
On Jan 26, 9:21 pm, David Spain wrote: The same needs (and has yet) to happen with gravitation. Keep an eye on E8. Rumor has it that it is able to account for dark stuff. Interesting. Especially if it can predict new bosons with low enough energy to be found. SU(3) is not enough. Agreed. Dave |
#5
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Random thoughts..
snidely wrote:
On Jan 26, 9:21 pm, David Spain wrote: The same needs (and has yet) to happen with gravitation. Keep an eye on E8. Rumor has it that it is able to account for dark stuff. For everyone else, A starting point for E8 and Lie Algebra: http://en.wikipedia.org/wiki/An_Exce..._of_Everything Now to just find the appropriate E8 template on my Spirograph(TM). ;-) Dave |
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