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Keyword: stringtheory

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  • Putting your hand in the Large Hadron Collider...

    09/25/2010 8:07:14 AM PDT · by grjr21 · 48 replies
    YouTube ^ | Sept 16 2010 | sixtysymbols
    If I put my hand in the Large Hadron Collider what would happen ?
  • Certain doped-oxide ceramics resist Ohm's Law

    09/21/2010 8:50:31 AM PDT · by decimon · 31 replies
    American Institute of Physics ^ | September 21, 2010 | Unknown
    Washington, D.C. (September 21, 2010) -- For months, Anthony West could hardly believe what he and his colleagues were seeing in the lab -- or the only explanation for the unexpected phenomena that seemed to make sense. Several of the slightly doped high-purity barium titanate (BT) ceramics his research group was investigating were not following the venerable Ohm's Law, which relates electrical voltage to current and resistance. Applying or removing a voltage caused a gradual change in the materials' electrical resistance. The new effect was seen consistently regardless of the temperature or whether the experiments were conducted in vacuum, air,...
  • How Richard Feynman went from stirring jelly to a Nobel Prize

    09/16/2010 5:45:18 PM PDT · by decimon · 29 replies
    BBC ^ | September 16, 2010 | Robin Ince
    Nobel Prize-winning and eccentric physicist Richard Feynman has been called a buffoon and a magician, but is lauded as a man who could make science accessible and interesting for all. When I was a child I desperately wanted to be a scientist, but then it all went wrong. Unfortunately, during the early years of my secondary school education, science became joyless. It was a subject that seemed disjointed from the world even though it is the method that attempts to explain the world and the universe. If only it were possible to place an automaton Richard Feynman in every school....
  • A New View of Gravity: Entropy and information may be crucial concepts for explaining roots...

    09/14/2010 7:10:27 PM PDT · by SunkenCiv · 21 replies
    Science News (Vol.178 #7 p. 26) ^ | September 25th, 2010 | Tom Siegfried
    As Sir Isaac Newton himself replied in response to similar questions, "hypotheses non fingo." Which roughly translates as "I don't have a clue." That such a simple question, about so common a phenomenon, has defied a direct answer for centuries might explain why the physics world has been atwitter lately over a novel attempt to resolve the riddle. A flurry of recent papers have examined this new idea, which mixes principles from string theory and black hole physics with basic old-fashioned thermodynamics. If this notion is right, gravity turns out to be a special sort of entropy, a result of...
  • Hubble Spots Space Spiral ( for this can't be a failed missile launch. )

    09/12/2010 10:32:29 PM PDT · by American Constitutionalist · 27 replies
    Discovery News. ^ | September 7 , 2010 | Ian O'Neill
    http://news.discovery.com/space/hubble-spots-ghostly-space-spiral.html
  • 'Beam me up, Scotty!' Breakthrough as scientists move objects 5ft using tractor lasers

    09/11/2010 9:57:20 AM PDT · by Immerito · 24 replies · 1+ views
    Daily Mail ^ | September 9, 2010 | Richard Shears
    Scientists have invented a tractor beam which is able to move large objects longer distances than ever before by using a laser light. A team of researchers at the Australian National University in Canberra have brought the art of molecular transportation, made famous by the catchphrase 'Beam me up, Scotty' from the TV series Star Trek, a fraction closer. Using what they call tractor beams - rays of energy that can move objects - they have managed to move tiny particles up to 59 inches from one place to another.
  • Mysterious Q Balls -Created in the Heat of the Newborn Universe: Are They SciFi or SciFact?

    09/11/2010 5:00:25 AM PDT · by LibWhacker · 34 replies
    Daily Galaxy ^ | 9/10/10 | Casey Kazan
    Q-balls zoom through the Universe, according to CERN physicist Brian Cox, vaporizing stars and flouting the laws of physics. Each one is like a new universe in a nutshell. Inside a Q-ball, the familiar forces that hold our world together don't exist, which means that a single Q-ball can eat the heart out of a super-dense star,causing it to self-destruct in an almighty cosmic explosion. This was the scientific premise of the scifi thriller, Sunshine, directed by Danny Boyle (Trainspotting, The Beach). That's the fiction. The fact is that a Q-ball would travel through a light star like the sun...
  • Universe chaotic from very beginning

    09/07/2010 3:12:05 PM PDT · by decimon · 19 replies
    Northwestern University ^ | September 7, 2010 | Unknown
    Researchers show that the big bang was followed by chaos Seven years ago Northwestern University physicist Adilson E. Motter conjectured that the expansion of the universe at the time of the big bang was highly chaotic. Now he and a colleague have proven it using rigorous mathematical arguments. The study, published by the journal Communications in Mathematical Physics, reports not only that chaos is absolute but also the mathematical tools that can be used to detect it. When applied to the most accepted model for the evolution of the universe, these tools demonstrate that the early universe was chaotic. Certain...
  • HAWKING WRONG AGAIN, RESEARCHER TELLS MARS CONFERENCE (re: wormhole time machine model.

    01/27/2005 1:24:21 PM PST · by yankeedame · 60 replies · 1,701+ views
    The Press Box ^ | Wed Aug 25 2004 | Belinda Drizdale
    HAWKING WRONG AGAIN, RESEARCHER TELLS MARS CONFERENCEAdded : (Wed Aug 25 2004) For Immediate Release: HAWKING WRONG AGAIN, RESEARCHER TELLS MARS CONFERENCE by Belinda Drizdale (cleared for redistribution with World.Net.News credit )Dateline August 21, 2004 Chicago, Illinois, USA: Research and development engineer Marshall Barnes stood before a packed audience in PDR 9 in the luxurious Palmer House Hilton in Chicago and explained to members of the International Mars Conference (see http://www.marssociety.org/docs/sched_04.pdf bottom of Saturday's schedule, 4:30 ) how Stephen Hawking and others have made as yet undetected errors in their published works. These mistakes form a pattern of hidden assumptions...
  • Discovery of Most Recent Supernova in Our Galaxy

    09/05/2010 11:12:21 AM PDT · by Ernest_at_the_Beach · 17 replies
    chandra.harvard.edu ^ | May 14, 2008
    The most recent supernova in our Galaxy has been discovered by tracking the rapid expansion of its remains. This result, using NASA's Chandra X-ray Observatory and NRAO's Very Large Array (VLA), has implications for understanding how often supernovas explode in the Milky Way galaxy. The supernova explosion occurred about 140 years ago, making it the most recent supernova in the Milky Way as measured in Earth's time frame. Previously, the last known galactic supernova occurred around 1680, based on studying the expansion of its remnant Cassiopeia A. The recent supernova explosion was not seen in optical light about 140 years...
  • M87: Galactic Super-volcano in Action

    09/05/2010 10:46:55 AM PDT · by Ernest_at_the_Beach · 17 replies · 1+ views
    chandra.harvard.edu ^ | August 18, 2010
    A galactic "super-volcano" in the massive galaxy M87 is erupting and blasting gas outwards, as witnessed by NASA's Chandra X-ray Observatory and NSF's Very Large Array. The cosmic volcano is being driven by a giant black hole in the galaxy's center and preventing hundreds of millions of new stars from forming. Astronomers studying this black hole and its effects have been struck by the remarkable similarities between it and a volcano in Iceland that made headlines earlier this year. At a distance of about 50 million light years, M87 is relatively close to Earth and lies at the center of...
  • 'Slow light' on a chip holds promise for optical communications

    09/05/2010 3:58:59 PM PDT · by decimon · 11 replies
    University of California - Santa Cruz ^ | September 5, 2010 | Unknown
    SANTA CRUZ, CA--A tiny optical device built into a silicon chip has achieved the slowest light propagation on a chip to date, reducing the speed of light by a factor of 1,200 in a study reported in Nature Photonics (published online September 5 and in the November print issue). The ability to control light pulses on an integrated chip-based platform is a major step toward the realization of all-optical quantum communication networks, with potentially vast improvements in ultra-low-power performance. Holger Schmidt, professor of electrical engineering in the Baskin School of Engineering at the University of California, Santa Cruz, leads the...
  • Cosmic 'Ghost': "Evidence of a supermassive black hole equal in power to a billion supernovas."

    09/04/2010 6:12:52 PM PDT · by LibWhacker · 54 replies
    Mg20727753.800-1_300 NASA's Chandra X-ray Observatory located a cosmic "ghost" that scientists think is evidence of a huge eruption produced by a supermassive black hole equal in power to a billion supernovas. The source, HDF 130, is over 10 billion light years away and existed at a time 3 billion years after the Big Bang, when galaxies and black holes were forming at a high rate. The X-ray ghost, so-called because a diffuse X-ray source has remained after other radiation from the outburst has died away, is in the Chandra Deep Field-North, one of the deepest X-ray images ever taken. "We'd...
  • Magnetism's subatomic roots: Rice study of high-tech materials helps explain everyday phenomenon

    09/04/2010 9:49:37 AM PDT · by SunkenCiv · 33 replies
    Rice University ^ | Friday, September 3, 2010 | Jade Boyd
    The modern world -- with its ubiquitous electronic devices and electrical power -- can trace its lineage directly to the discovery, less than two centuries ago, of the link between electricity and magnetism. But while engineers have harnessed electromagnetic forces on a global scale, physicists still struggle to describe the dance between electrons that creates magnetic fields. Two theoretical physicists from Rice University are reporting initial success in that area in a new paper in the Proceedings of the National Academy of Science. Their new conceptual model, which was created to learn more about the quantum quirks of high-temperature superconductors...
  • Testing Einstein's Theory in Sagittarius A

    08/31/2010 8:12:14 PM PDT · by SunkenCiv · 23 replies
    Softpedia ^ | Monday, August 30th, 2010 | Tudor Vieru
    The bright B spectral class star S2 has been observed by astronomers since 1995, because it is revolving around the radio source known as Sagittarius A, which most likely is the supermassive black hole at the core of the Milky Way. Given that the object spins around the dark behemoth once every 16 years, it has already concluded a full orbit around the radio source since being discovered... Among its most important points is the fact that the orbit of an object located close to a star or black holes exerting a strong gravitational pull do not respect the rules...
  • Navy Chemist May Have Rediscovered 'Cold Fusion'

    03/25/2009 5:17:10 PM PDT · by nickcarraway · 38 replies · 2,029+ views
    Fos News ^ | Wednesday, March 25, 2009
    Twenty years ago this week, a pair of previously unknown scientists stunned the world by announcing they'd done the impossible by achieving nuclear fusion in a lab flask at room temperature. Martin Fleischmann and Stanley Pons quickly became celebrities as the news media hailed them for discovering a cheap source of nearly limitless power. But it all fell apart as other scientists couldn't duplicate their results, and the pair later admitted they'd made mistakes in the experiments. Now a U.S. Navy researcher, speaking on the anniversary of and in the same city where they made their announcement, thinks Fleischmann and...
  • The proton - smaller than thought

    07/12/2010 1:55:19 PM PDT · by decimon · 17 replies
    Max Planck Society ^ | July 12, 2010 | Unknown
    An international team measures the charge radius of the hydrogen nucleus and stumbles across some mysteries of physics Big problems sometimes come in small packages. The problem with which physicists must now concern themselves measures a mere 0.0350 millionth of a millionth of a millimetre. This is precisely the difference between the new, smaller, dimension of the proton, the nucleus of the hydrogen atom, and the value which has been assumed so far. Instead of 0.8768 femtometres it measures only 0.8418 femtometres. At the Paul Scherrer Institute in Switzerland, an international team of researchers including physicists from the Max Planck...
  • Surprise To Physicists -- Protons Aren't Always Shaped Like A Basketball!

    04/08/2003 6:16:11 AM PDT · by vannrox · 48 replies · 926+ views
    Science Daily ^ | 2003-04-08 | Editorial Source
    Surprise To Physicists -- Protons Aren't Always Shaped Like A Basketball PHILADELPHIA -- When Gerald A. Miller first saw the experimental results from the Thomas Jefferson National Accelerator Facility, he was pretty sure they couldn't be right. If they were, it meant that some long-held notions about the proton, a primary building block of atoms, were wrong. But in time, the findings proved to be right, and led physicists to the conclusion that protons aren't always spherically shaped, like a basketball. "Some physicists thought they did the experiment wrong," said Miller, a University of Washington physics professor. "Even I thought...
  • Speed of light slowing down?

    08/01/2004 12:25:39 PM PDT · by wagglebee · 136 replies · 3,321+ views
    WorldNetDaily ^ | 7/31/04 | Chris Bennett
    The theory of evolution requires unfathomable lengths of time – eons ... billions and billions of years. Even with all that time, it's still hard to imagine how complex biochemicals such as hemoglobin or chlorophyll self assembled in the primordial goo. But to those of us who question the process, the answer is always the same. Time. More time than you can grasp – timespans so vast that anything is possible, even chance combinations of random chemicals to form the stunning complexities of reproducing life. Modern physics is now considering a theory that could throw into confusion virtually all of...
  • Scientific Discovery of "Rare Nuclear-Fusion Violating-Charge-Symmetry"!

    04/09/2003 7:08:33 PM PDT · by vannrox · 19 replies · 850+ views
    Science Daily ^ | 4-8-2003 | Editorial Staff
    Indiana University Scientists First To Detect Rare Nuclear Fusion Violating Charge Symmetry BLOOMINGTON, Ind. -- Scientists at the Indiana University Cyclotron Facility in Bloomington have made the first unambiguous detection of a rare process, the fusion of two nuclei of heavy hydrogen to form a nucleus of helium and an uncharged pion. The pion is one of the subatomic particles responsible for the strong force that holds every nucleus together. The achievement will be announced Saturday (April 5) at the meeting of the American Physical Society in Philadelphia. "Scientists have searched for this rare fusion process since the 1950s," said...