Forum Home
PC World Chat
Thread ID: 71834	2006-08-18 23:31:00	Free Energy?	Renmoo (66)	PC World Chat

Post ID	Timestamp	Content	User
479335	2006-08-27 07:19:00	The large scale structure found in the distribution of galaxies in this observed Universe, according to theory, should be uniform and at least preserve symmetry in North-South East-West Hemispheres, which it does not, has led some to propose that the structure seen is as a result of remnant traces of the form of the last Big Bang/s left behind previously. Losses in closed systems lead to no perpetual motion as seen from outside, the Universe, by definition, is all there is, therefore nothing could ever be lost. It may eventually run down to a low level uniform distribution of energy with no activity (entrophy) but this would contravene the Uncertainty Principle. ie the state of the Universe can never be totally predicted, there will always be activity.	zqwerty (97)
479336	2006-08-27 09:15:00	My Physics teacher had once showed us a device that has two rings interlinked in it. Both rings have a permanent magnet fixed onto them. When one of the ring is set moving, it would rotate around the other ring. Eventually, the other ring would rotate with the first ring as well. At a certain point when the first ring is about the stop, the magnets would come in contact with each other and the repel force would push it upwards again - hence repeating the cycle. Question: Would this "cycle" go on forever? Or is it just a matter of time before the whole thing stalls? Initially I thought that this clever device would eventually stop (law of conservation of energy), however the interaction between the magnets seems to prove otherwise. Cheers :)	Renmoo (66)
479337	2006-08-27 09:37:00	Not directly pertinent to the discussion above but very interesting: www.newyorker.com	zqwerty (97)
479338	2006-08-28 00:29:00	I have another c/p from a site I subscribe to concerning the "Big Bang Theory" and where is all the "dark matter?" hullabaloo . It makes lively reading, and kinda ask and answers at the same time the equal and opposite reaction thing-y . Understanding this, will help offset the unbalanced view of creation v evolution not to mention the perpetual motion arguement . For as much as we've learned about the universe, scientists have remained troubled by a few niggling questions -- questions like "Where's the rest of it?" It's long been an annoyance that everything we can see out there accounts for only about 10 percent of the mass needed to keep the whole thing from flying apart . To make all the equations come out right, theorists decided all that mass must be there anyway, it was just inconveniently invisible . They took to calling it "dark matter . " Naturally, what with all those equations at stake, scientists have been eager for any tangible evidence that what they couldn't see really was there, and now they've got it . A team including researchers at Stanford Linear Accelerator Center has found evidence of the mysterious stuff by watching galaxies 3 billion light-years away . Using NASA's Chandra X-ray Observatory and the Hubble Space Telescope, plus several ground-based telescopes, astronomers focused on the head-on collision of two groups of galaxies, and by watching the way mass bends light, were able to detect visible and dark matter acting independently of one another . "We had predicted the existence of dark matter for decades, but now we've seen it in action," said Marusa Bradac of SLAC's Kavli Institute for Particle Astrophysics and Cosmology in a press statement . "This is groundbreaking . " It's also a win for good old Newtonian gravity; some alternatives to the dark matter theory involved variations in gravity that would require the rewriting of several texts . So now that it appears dark matter does exist, all we have to figure out is what it is, where it came from and why there's so darn much of it . Right after that, we can move on to "dark energy," where the current state of understanding is, to use a scientific term, "clueless . " Good Morning Silicon Valley is written and edited with the able assistance of John Murrell .	SurferJoe46 (51)
479339	2006-08-28 02:29:00	Here's a video about free energy. Be warn though, it's over an hour long: video.google.com As for the idea of free energy. I like the idea. It means when I'm at work I can do less work and get more done.	seraph (11012)
479340	2006-08-29 11:07:00	Expansion must logically slow and eventually stop if the infinate argument is not true, then gravity will cause the universe to collapse in upon itself back toward singularity . How can this happen given that perpetual motion is not possible? Big bang provides a time line that can be measured . Expansion of the space between galaxies can likewise be measured, and the rate of accelleration . Interestingly, and directly related to Zqwerty's post, the answer lies in the sum of the forces acting on the fabric of the Universe . If the answer is 1 - then expansion will stop, and contraction back to the Omega point will occur . If the answer is less than 1, then the Universe will continue to expand forever . The forces at work are the photon pressure originating from the Big Bang and lots of little bangs (like supernovae) ever since, up against the force of gravity/curvature of space . At present there are startling observations of very distant galaxies accelerating away . Nevertheless physicists calculate a value very close to 1 at the moment . New knowledge is always being gained . Interested to read about the Dark Matter observations .	Winston001 (3612)
479341	2006-08-29 11:11:00	My Physics teacher had once showed us a device that has two rings interlinked in it . Both rings have a permanent magnet fixed onto them . When one of the ring is set moving, it would rotate around the other ring . Eventually, the other ring would rotate with the first ring as well . At a certain point when the first ring is about the stop, the magnets would come in contact with each other and the repel force would push it upwards again - hence repeating the cycle . Question: Would this "cycle" go on forever? Or is it just a matter of time before the whole thing stalls? Initially I thought that this clever device would eventually stop (law of conservation of energy), however the interaction between the magnets seems to prove otherwise . Cheers :) The rings must be subject to friction with the air and the table top . Eventually I'd expect them to reach equilibrium and stop . Otherwise we'd have had self-turning generators 100 years ago . Just a guess .	Winston001 (3612)
479342	2006-08-29 11:16:00	The large scale structure found in the distribution of galaxies in this observed Universe, according to theory, should be uniform and at least preserve symmetry in North-South East-West Hemispheres, which it does not, has led some to propose that the structure seen is as a result of remnant traces of the form of the last Big Bang/s left behind previously . Learnt a lot from this thread . I thought that superclusters of galaxies on the scale of 100 million years showed symmetry . It is a bit troubling that the Universe is homogenous (looks the same in all directions) yet is actually made up of uneven lumps of matter . And the lumps aren't scattered evenly - instead they are in groups with vast empty space in between . Go figure .	Winston001 (3612)
479343	2006-08-29 12:22:00	While doing my commerce degree, I took a first year astro-physics paper at Uni just to break up the grey on grey world that makes up a commerce degree. It was a very interesting subject and something that I would like to persue further as a hobbie. I did well enough, but the level of maths and physics required by the end of first year made me decide not to push my luck ... back to supply and demand curves for me. Some of the formulas and figures involved did funny things to my brain. Space is a big place.	RandomCarnage (9359)
479344	2006-08-29 13:33:00	What are dark matter and dark energy, and how are they affecting the universe? www.sciam.com	zqwerty (97)
1 2 3 4 5 6 7 8 9