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Keyword: stringtheory

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  • Doppler effect found even at molecular level – 169 years after its discovery

    05/10/2011 3:25:08 PM PDT · by decimon · 7 replies
    Oregon State University ^ | May 10, 2011 | Unknown
    CORVALLIS, Ore. – Whether they know it or not, anyone who's ever gotten a speeding ticket after zooming by a radar gun has experienced the Doppler effect – a measurable shift in the frequency of radiation based on the motion of an object, which in this case is your car doing 45 miles an hour in a 30-mph zone. But for the first time, scientists have experimentally shown a different version of the Doppler effect at a much, much smaller level – the rotation of an individual molecule. Prior to this such an effect had been theorized, but it took...
  • Fundamental question on how life started solved

    05/09/2011 3:14:09 PM PDT · by decimon · 31 replies
    University of Bonn ^ | May 9, 2011 | Unknown
    German and US researchers calculate a carbon nucleus of crucial importanceThe researchers published their results in the coming issue of the scientific journal Physical Review Letters. "Attempts to calculate the Hoyle state have been unsuccessful since 1954," said Professor Dr. Ulf-G. Meißner (Helmholtz-Institut für Strahlen- und Kernphysik der Universität Bonn). "But now, we have done it!" The Hoyle state is an energy-rich form of the carbon nucleus. It is the mountain pass over which all roads from one valley to the next lead: From the three nuclei of helium gas to the much larger carbon nucleus. This fusion reaction takes...
  • Why 5, 8 and 24 Are the Strangest Numbers in the Universe

    05/09/2011 3:21:35 PM PDT · by decimon · 57 replies
    Scientific American ^ | May 4, 2011 | Michael Moyer
    John Baez expounds on what makes the numbers 5, 8 and 24 so specialIn the May 2011 issue of Scientific American mathematician John Baez co-authors "The Strangest Numbers in String Theory," an article about the octonions, an eight-dimensional number system that was discovered in the mid–19th century but that has been largely ignored until quite recently. As the name of the article implies, interest in the octonions has been rekindled by their surprising relationship to recent developments in theoretical physics, including supersymmetry, string theory and M-theory. Baez and his co-author John Huerta wrote, "If string theory is right, the octonions...
  • Jeff Bezos Invests $19.5 Million in General Fusion's Nuclear Technology

    05/06/2011 12:24:35 PM PDT · by Red Badger · 26 replies
    Popular Science ^ | 05.05.2011 at 5:43 pm | By Clay Dillow
    This is the fusion company that PopSci said might save the world Bring up the prospect of fusion power, and often eyes glaze over. It’s not that it’s not a thrilling prospect--cheap and inexhaustible energy would solve a lot of problems here on planet Earth--but it’s been such a pipe dream for so long that it’s often hard to make people care. But at least one person with a proven track record in recognizing potential when he sees it has taken an interest in a fusion-powered future: Amazon founder and gazillionaire Jeff Bezos has thrown $19.5 million to Canada’s General...
  • Superconductivity Near 20 Celsius (ROOM TEMPERATURE Superconductivity)

    03/20/2011 5:49:20 PM PDT · by Wonder Warthog · 94 replies · 1+ views
    superconductors.org ^ | 17 March 2011 | E. Joe Eck
    In eight magnetization tests a small amount of the compound (Tl5Pb2)Ba2MgCu10O17+ consistently produced sharp diamagnetic transitions (the Meissner effect) near 20 Celsius (see above graphic), and resistive transitions that appeared near 18.5C. These temperatures are believed accurate +/- 2 degrees. In 2008 a Sn-In-Pb-Tm cuprate produced superconductivity near 195K . That material had a C-axis lattice constant around 33 angstroms. Attempts to go beyond 33 Å within that system failed to produce signs of superconductivity. That fact pointed to 33 Å being a rough upper size limit for a superconductive unit cell within this family of copper perovskites. Since the...
  • Supercomputers crack sixty-trillionth binary digit of Pi-squared

    04/30/2011 12:22:36 AM PDT · by allmost · 57 replies
    physorg.com ^ | April 29, 2011 | Linda Vu
    Australian researchers have done the impossible -- they’ve found the sixty-trillionth binary digit of Pi-squared! The calculation would have taken a single computer processor unit (CPU) 1,500 years to calculate, but scientists from IBM and the University of Newcastle managed to complete this work in just a few months on IBM's "BlueGene/P" supercomputer, which is designed to run continuously at one quadrillion calculations per second. Their work was based on a mathematical formula discovered a decade ago in part by the Department of Energy's David H. Bailey, the Chief Technologist of the Computational Research Department at the Lawrence Berkeley National...
  • Optical microscope without lenses produces high-resolution 3-D images on a chip

    04/22/2011 10:06:24 AM PDT · by decimon · 8 replies
    University of California - Los Angeles ^ | April 21, 2011 | Unknown
    UCLA researchers have redefined the concept of a microscope by removing the lens to create a system that is small enough to fit in the palm of a hand but powerful enough to create three-dimensional tomographic images of miniscule samples. The advance, featured this week in the early online edition of the journal Proceedings of the National Academy of Sciences, represents the first demonstration of lens-free optical tomographic imaging on a chip, a technique capable of producing high-resolution 3-D images of large volumes of microscopic objects. "This research clearly shows the potential of lens-free computational microscopy," said Aydogan Ozcan, senior...
  • Primordial weirdness: Did the early universe have 1 dimension?

    04/20/2011 1:12:54 PM PDT · by decimon · 28 replies
    University at Buffalo ^ | April 20, 2011 | Unknown
    Scientists outline a test for the theory, which, if proven, would address major problems in particle physics BUFFALO, N.Y. -- Did the early universe have just one spatial dimension? That's the mind-boggling concept at the heart of a theory that University at Buffalo physicist Dejan Stojkovic and colleagues proposed in 2010. They suggested that the early universe -- which exploded from a single point and was very, very small at first -- was one-dimensional (like a straight line) before expanding to include two dimensions (like a plane) and then three (like the world in which we live today). The theory,...
  • Quantum Teleportation Is a Reality

    04/17/2011 12:15:04 PM PDT · by decimon · 47 replies
    PC World ^ | April 16, 2011 | James Mulroy
    Beam me up, Scotty; scientists have finally done it! Using what looks like an incredibly complicated setup, scientists have not just figured out how to transport information using the quantum highway; they have actually made it happen. > To do this, the researchers developed a "broadband, zero-dispersion teleportation apparatus" and a whole new set of "hybrid protocols involving discrete- and continuous-variable techniques in quantum information processing for optical sciences," along with some other things that I completely do not understand. In the end, the researchers managed to 'remove' the quantum information from space, and it was resurrected in another place....
  • Is an Adjacent Universe Causing the Dark Flow of Hundred of Millions of Stars at the Edge of the...

    04/16/2011 5:50:42 PM PDT · by LibWhacker · 31 replies
    Daily Galaxy ^ | 4/15/11
    Is an Adjacent Universe Causing the Dark Flow of Hundred of Millions of Stars at the Edge of the Observable Universe? Or, Might It Be Something ElseBack in the Middle Ages, maps showed terrifying images of sea dragons at the boundaries of the known world. Today, scientists have observed strange new motion at the very limits of the known universe -- kind of where you'd expect to find new things, but they still didn't expect this. A huge swathe of galactic clusters seem to be heading to a cosmic hotspot and nobody knows why. The unexplained motion has hundreds of...
  • MIT's Peter Hagelstein: "We would love to do a test of the E-Cat"

    04/15/2011 5:34:37 PM PDT · by Normandy · 16 replies
    Free Energy Times ^ | April 15, 2011
    There are some indications today that the mainstream scientific community's attitude towards cold fusion and specifically the Rossi/Focardi energy catalyzer may not be as dismissive as some may seem. An article by Natalie Wolchover on the website Life's Little Mysteries today included a review of the E-cat and comments from some leading researchers in the field of nuclear science -- and an interesting invitation was extended by one of them.
  • At Particle Lab, a Tantalizing Glimpse Has Physicists Holding Their Breaths

    04/10/2011 6:32:18 PM PDT · by neverdem · 24 replies
    NY Times ^ | April 5. 2011 | DENNIS OVERBYE
    Physicists at the Fermi National Accelerator Laboratory are planning to announce Wednesday that they have found a suspicious bump in their data that could be evidence of a new elementary particle or even, some say, a new force of nature. The results, if they hold up, could be a spectacular last hurrah for Fermilab’s Tevatron, once the world’s most powerful particle accelerator and now slated to go dark forever in September or earlier, whenever Fermilab runs out of money to operate it. “Nobody knows what this is,” said Christopher Hill, a theorist at Fermilab who was not part of the...
  • Star-Eating Black Hole May Be Producing Universe's Biggest Blast

    04/10/2011 8:07:18 PM PDT · by neverdem · 81 replies
    ScienceNOW ^ | 7 April 2011 | Yudhijit Bhattacharjee
    Enlarge Image Breathing fire. A distant cosmic explosion detected 28 March (left) continues to put out a series of high-energy flares (right). Astronomers believe it's a star being consumed by a black hole 3.8 billion light-years away. Credit: (left, galaxy) ASA/Swift/Stefan Immler; (right, diagram) NASA/Swift/Penn State/J. Kennea Astronomers have observed possibly the biggest blast ever seen in the cosmos. When NASA's SWIFT space observatory first spotted it 10 days ago, observers thought it was a massive star blowing up as a supernova and expected it to fade within hours or even minutes. But the high-energy radiation from the source...
  • Physicists discover new way to visualize warped space and time

    04/11/2011 10:44:29 AM PDT · by decimon · 43 replies
    California Institute of Technology ^ | April 11, 2011 | Marcus Woo
    PASADENA, Calif.—When black holes slam into each other, the surrounding space and time surge and undulate like a heaving sea during a storm. This warping of space and time is so complicated that physicists haven't been able to understand the details of what goes on—until now. "We've found ways to visualize warped space-time like never before," says Kip Thorne, Feynman Professor of Theoretical Physics, Emeritus, at the California Institute of Technology (Caltech). By combining theory with computer simulations, Thorne and his colleagues at Caltech, Cornell University, and the National Institute for Theoretical Physics in South Africa have developed conceptual tools...
  • Andrea Rossi's Cold Fusion Energy Catalyzer (E-Cat): FAQs

    04/09/2011 2:06:23 PM PDT · by Windflier · 150 replies
    Pure Energy Systems News ^ | March 21, 2011 | Hank Mills
    This FAQ covers Andrea Rossi's technology, which combines small amounts of ubiquitous and safe Nickel and Hydrogen in the presence of proprietary catalyst under pressure and heat to generate a large amount of heat. It also addresses questions about the commercialization under way. FAQ What is the Energy Catalyzer? It is a "Cold Fusion" device developed by Italian engineer and inventor Andrea Rossi. It produces heat by placing nickel powder of very small particle size (nano-meters to micro-meters) in a pressurized hydrogen environment along with currently undisclosed (for proprietary reasons) catalysts that enhance the reaction. When this environment is heated...
  • Dark matter could provide heat for starless planets

    04/02/2011 6:24:09 PM PDT · by LibWhacker · 51 replies
    PhysOrg ^ | 4/1/11 | Deborah Braconnier
    (PhysOrg.com) -- In a resent paper posted at arXiv.org and submitted to Astrophysical Journal, Dan Hooper and Jason Steffen, physicists at Fermilab in Illinois, present the theory that cold and dark planets, not heated by a star, could be heated by dark matter. In theory, this dark matter could produce habitable planets outside of what is known as a habitable zone. While no one knows exactly what dark matter is, it is believed to make up about 83 percent of the universe. The most accepted theory is this dark matter is made up of what are called WIMPs, or weakly...
  • Antimatter: The Conundrum of Storage

    03/11/2011 10:39:51 PM PST · by LibWhacker · 15 replies
    Centauri Dreams ^ | 3/11/11 | Paul Gilster
    Antimatter: The Conundrum of Storage by Paul Gilster on March 11, 2011 Are we ever going to use antimatter to drive a starship? The question is tantalizing because while chemical reactions liberate about one part in a billion of the energy trapped inside matter — and even nuclear reactions spring only about one percent of that energy free — antimatter promises to release what Frank Close calls ‘the full mc2 latent within matter.’ But assuming you can make antimatter in large enough amounts (no mean task), the question of storage looms large. We know how to store antimatter in...
  • Japan Developed Atom Bomb; Russians Grabbed Scientists

    04/05/2011 7:20:55 PM PDT · by SteveH · 58 replies
    Atlanta Constitution via reformation.org ^ | October 1, 1946 | David Snell
    Actual Test Was Success Japan developed and successfully tested an atomic bomb three days prior to the end of the war. She destroyed unfinished atomic bombs, secret papers and her atomic bomb plans only hours before the advance units of the Russian Army moved into Konan, Korea, site of the project. Japanese scientists who developed the bomb are now in Moscow, prisoners of the Russians. They were tortured by their captors seeking atomic "know-how." The Konan area is under rigid Russian control. They permit no American to visit the area. Once, even after the war, an American B-29 Superfortress en...
  • Two dying stars reborn as one (w/ video)

    04/07/2011 7:51:52 PM PDT · by SunkenCiv · 8 replies
    PhysOrg ^ | Wednesday, April 6, 2011 | Harvard-Smithsonian Center for Astrophysics
    White dwarfs are dead stars that pack a Sun's-worth of matter into an Earth-sized ball. Astronomers have just discovered an amazing pair of white dwarfs whirling around each other once every 39 minutes. This is the shortest-period pair of white dwarfs now known. Moreover, in a few million years they will collide and merge to create a single star... The newly identified binary star (designated SDSS J010657.39 -- 100003.3) is located about 7,800 light-years away in the constellation Cetus. It consists of two white dwarfs, a visible star and an unseen companion whose presence is betrayed by the visible star's...
  • Powerful Space Explosion May Herald Star's Death By Black Hole

    04/07/2011 5:59:38 PM PDT · by Ernest_at_the_Beach · 19 replies
    Space.com ^ | 07 April 2011 Time: 02:18 PM ET | SPACE.com Staff
    Images from NASA's Swift satellite were combined in this UV/optical/X-ray view of the explosion, which is known as GRB 110328A. The blast was detected in X-rays, which were collected on March 28. CREDIT: NASA/Swift/Stefan ImmlerA huge, powerful star explosion detonated in deep space last week — an ultra-bright conflagaration that has astronomers scratching their heads over exactly how it happened. The explosion may be the death cry of a star as it was ripped apart by a black hole, scientists said. High-energy radiation continues to brighten and fade from the March 28 blast's location, about 3.8 billion light-years from Earth...