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Keyword: stringtheory

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  • Loose cable blamed for speedy neutrinos

    03/06/2012 1:16:25 AM PST · by U-238 · 41 replies
    Science News ^ | 2/23/2012 | Devin Powell
    Faulty wiring has been proposed as the glitch that caused a European physics experiment to clock particles flying faster than light. Scientists at Italy’s OPERA experiment reported in September that nearly weightless particles called neutrinos were apparently traveling from the CERN laboratory on the Swiss-French border to an underground detector in Italy, 730 kilometers away, faster than the speed of light. The apparent violation of Einstein’s theory of special relativity immediately produced a chorus of theorists offering reasons why neutrinos simply could not be going that fast (SN: 11/5/11, p. 10). “It was always clear to me that the results...
  • Physicists Measure the Skin of a Nucleus

    03/03/2012 9:41:05 PM PST · by neverdem · 20 replies
    ScienceNOW ^ | 2 March 2012 | Adrian Cho
    Enlarge Image Nuclear dermatology clinic. The vessel containing the lead sample in the PREX experiment (left) and the massive spectrometers used to detect the electrons scattered from the lead nuclei and measure the nuclei's skin. Credit: Photos Courtesy of Robert Michaels A large atomic nucleus is like a chocolate truffle with a gooey interior and a harder shell. Inside, the nucleus contains a mixture of protons and neutrons. Outside, it's covered with a nearly pure layer of neutrons—the "neutron skin." Now, for the first time, nuclear physicists have measured the thickness of that skin in a fairly direct way....
  • Official Word on Superluminal Neutrinos Leaves Warp-Drive Fans a Shred of Hope—Barely

    02/29/2012 4:45:22 PM PST · by neverdem · 13 replies · 1+ views
    ScienceInsider ^ | 24 February 2012 | Edwin Cartlidge
    The CERN particle physics laboratory in Geneva has confirmed Wednesday's report that a loose fiber-optic cable may be behind measurements that seemed to show neutrinos outpacing the speed of light. But the lab also says another glitch could have caused the experiment to underestimate the particles' speed. In a statement based on an earlier press release from the OPERA collaboration, CERN said two possible "effects" may have influenced the anomalous measurements. One of them, due to a possible faulty connection between the fiber-optic cable bringing the GPS signals to OPERA and the detector's master clock, would have caused the experiment...
  • Renowned Physicist Stephen Hawking Frequents Sex Clubs

    02/29/2012 3:19:45 AM PST · by grey_whiskers · 70 replies · 7+ views
    Mark this in your book of bizarre celebrity sightings. Renowned physicist Stephen Hawking is somewhat of a regular at a Devore, California sex club, RadarOnline.com is exclusively reporting. According to a source who has been a member of Freedom Acres swingers club for nearly half a decade, Hawking, 70, shows up to the club with a bevy of nurses and assistants and has naked woman grind on him.
  • String Theory Skeptics and Multiverse Mania

    02/23/2012 7:32:29 PM PST · by SeekAndFind · 77 replies
    Not Even Wrong ^ | 02/21/2012 | Peter Woit
    My endless rants here about the hot field of multiverse studies are mainly motivated by concern about the effect this is having on particle theory. Multiverse scenarios all too often function as an excuse for not admitting that string theory/extra-dimensional ideas about unification have failed. Such an admission would encourage people to move on to more promising ideas, but instead hep-th is stuck in an endless doldrums with the high profile public face of the subject dominated by excited claims about what a wonderful discovery this region is.Independently of the string theory problem, I’m personally a skeptic that multiverse...
  • Are you scientifically literate? Take our quiz

    02/22/2012 8:08:53 PM PST · by P.O.E. · 63 replies
    CSM ^ | 12/11/12 | Eoin O'Carroll, Staff
  • Single-atom transistor is ‘end of Moore’s Law’ and ‘beginning of quantum computing’

    02/22/2012 8:43:48 AM PST · by SeekAndFind · 17 replies
    Kurzweil ^ | 02/22/2012
    A controllable transistor engineered from a single phosphorus atom. The atom, shown here in the center of an image from a computer model, sits in a channel in a silicon crystal. The atomic-sized transistor and wires might allow researchers to control gated qubits of information in future quantum computers. (Credit: Purdue University)The smallest transistor ever built has been created using a single phosphorous atom by an international team of researchers at the University of New South Wales, Purdue University and the University of Melbourne.The latest Intel chip, the “Sandy Bridge,” uses a manufacturing process to place 2.3 billion transistors 32...
  • The Boy Who Played With Fusion

    02/21/2012 9:07:37 AM PST · by justlurking · 68 replies
    Popular Science ^ | 2012-02-14 | Tom Clynes
    Propulsion,” the nine-year-old says as he leads his dad through the gates of the U.S. Space and Rocket Center in Huntsville, Alabama. “I just want to see the propulsion stuff.” A young woman guides their group toward a full-scale replica of the massive Saturn V rocket that brought America to the moon. As they duck under the exhaust nozzles, Kenneth Wilson glances at his awestruck boy and feels his burden beginning to lighten. For a few minutes, at least, someone else will feed his son’s boundless appetite for knowledge. Then Taylor raises his hand, not with a question but an...
  • Researchers Create Single-Atom Transistor

    02/20/2012 11:43:03 AM PST · by Ernest_at_the_Beach · 33 replies · 2+ views
    HardOCP ^ | Monday February 20, 2012 | Steve
    For those of you that haven't seen this yet, Researchers from Purdue, the University of Melbourne and the University of New South Wales have created a working transistor from a single atom. Thanks to Robert for the link. We have fabricated a single-atom transistor in which a single phosphorus atom is positioned between highly doped source and drain leads with a lateral spatial accuracy of ±1 atomic lattice spacing. We demonstrate that we are able to register source, drain and gate contacts to the individual donor atom and observe well-controlled transitions for 0, 1 and 2 electron states, in agreement...
  • Extraordinary Toroidal Vortices

    02/18/2012 4:32:57 PM PST · by gorush · 24 replies · 1+ views
    YouTube ^ | 2-12-10 | Evasius
    Extraordinary and beautiful examples of toroidal vortices produced by dolphins, beluga whales, humpback whales, volcanoes, hydrogen bombs, and man. A toroidal vortex, also called a vortex ring, is a region of rotating fluid moving through the same or different fluid where the flow pattern takes on a toroidal (doughnut) shape. The movement of the fluid is about the poloidal or circular axis of the doughnut, in a twisting vortex motion. Examples of this phenomenon are a smoke ring or a microburst. Vortex rings were first mathematically analysed by the German physicist Hermann von Helmholtz, in his paper of 1867 On...
  • 10-Year-Old Accidentally Creates New Molecule in Science Class

    02/17/2012 3:59:47 AM PST · by SunkenCiv · 28 replies · 1+ views
    Popular Science ^ | February 3, 2012 | Dan Nosowitz & The Mary Sue via Gizmodo
    Clara Lazen is the discoverer of tetranitratoxycarbon, a molecule constructed of, obviously, oxygen, nitrogen, and carbon. It's got some interesting possible properties, ranging from use as an explosive to energy storage. Lazen is listed as the co-author of a recent paper on the molecule. But that's not what's so interesting and inspiring about this story. What's so unusual here is that Clara Lazen is a ten-year-old fifth-grader in Kansas City, MO. Kenneth Boehr, Clara's science teacher, handed out the usual ball-and-stick models used to visualize simple molecules to his fifth-grade class. But Clara put the carbon, nitrogen, and oxygen atoms...
  • MIT suggests new physical model for condensed matter

    02/09/2012 8:49:53 PM PST · by Kevmo · 39 replies
    Arxiv.org and Vortex-L ^ | Feb 8 2012 | David Ledin
    [Vo]: MIT suggest new physical model for condensed matter The Vorts have some great comments about this theory. http://www.mail-archive.com/vortex-l@eskimo.com/msg63015.html David ledin Tue, 07 Feb 2012 07:40:12 -0800 MIT suggest new physical model for condensed matter to explain many observations of anomalies in condensed matter systems. they named Fleischmann , Pons and Piantelli but not rossi . http://arxiv.org/pdf/1201.4377.pdf ---------------------------------------------------------------------------------------------------------- http://www.mail-archive.com/vortex-l@eskimo.com/msg63024.html Mark Iverson-ZeroPoint Tue, 07 Feb 2012 10:07:44 -0800 The key phrase in the abstract is: "In the resulting model, there appears a new term in which nuclear transitions are coupled to lattice vibrations." I wonder if Hagelstein has been reading...
  • Physicists 'record' magnetic breakthrough

    02/07/2012 10:44:06 PM PST · by LibWhacker · 20 replies
    PhysOrg ^ | 2/7/12
    An international team of scientists has demonstrated a revolutionary new way of magnetic recording which will allow information to be processed hundreds of times faster than by current hard drive technology. The researchers found they could record information using only heat - a previously unimaginable scenario. They believe this discovery will not only make future magnetic recording devices faster, but more energy-efficient too. The results of the research, which was led by the University of York's Department of Physics, are reported in the February edition of Nature Communications. York physicist Thomas Ostler said: "Instead of using a magnetic field to...
  • University of Bologna Terminates Relationship With Rossi

    01/24/2012 4:21:51 AM PST · by Johnny B. · 20 replies
    New Energy Times ^ | 1/24/2012 | Steven B. Krivit
    Andrea Rossi, an Italian man who claims to have invented a practical low-energy nuclear reaction device, lost an ideal opportunity to have his device tested and evaluated by a prestigious University for lack of funds. Last summer, Rossi said he had started a research contract with the University of Bologna to allow its researchers to study his “Energy Catalyzer.” But that never happened. Today, Dario Braga, director of scientific research at the University told New Energy Times that the University waited long enough. It terminated the contract because Rossi did not fulfill his agreement to make the first progress payment....
  • 5 of the biggest unsolved mysteries in physics

    01/31/2012 2:06:57 PM PST · by NormsRevenge · 69 replies · 1+ views
    Yahoo ^ | 1/31/12 | Tecca - Today in Tech
    The mysteries of the universe are as vast and wide as existence itself. Throughout history, mankind has searched and struggled to find the answers tucked away inside the universe and everything we see around us. .. True, we have yet to come up with the answers to life, the universe, and everything — but oh do we have questions! Solving these mysteries may help to explain not only the creation of the universe, but also how it works, why it works, and possibly how it will end. 1. The Higgs boson The Higgs boson is a hypothetical particle whose accompanying...
  • California Researchers Hoping To Reveal Secrets of Anti-Gravity

    01/30/2012 5:38:51 PM PST · by dila813 · 27 replies · 1+ views
    Redorbit ^ | January 30, 2012 | Redorbit
    A team of researchers from the University of California, Riverside (UCR) say they are close to determining whether or not anti-matter exerts a sort of “anti-gravity” in much the same what that ordinary matter exerts regular gravity. In an article published Friday, BBC News reports that, while it is well known that normal matter attracts all other matter in the universe, scientists currently do not know if anti-matter would attract other matter, or repel it.
  • NEWT’S MOONBASE Could Provide Enough Helium-3 to Power ENTIRE US For Years

    01/28/2012 9:07:59 AM PST · by Hojczyk · 53 replies
    Gateway Pundit ^ | January 28,2012 | Jim Hoft
    Newt Gingrich told Floridians this week that that under his administration the US would have the first permanent base on the moon. An American moon base could provide America with enough Helium-3 to provide for all of country’s energy needs Nations and private companies are racing to be the first to scout the moon for Helium 3, a rare gas which could make almost unlimited, clean fusion energy a reality. Some experts estimate there a millions of tons in lunar soil — and that a single Space-Shuttle load would power the entire United States for a year. Both China and...
  • 'Starbursts' and black holes lead to biggest galaxies

    01/25/2012 2:08:21 PM PST · by NormsRevenge · 21 replies · 2+ views
    BBC News ^ | 1/25/12 | BBC
    Frenetic star-forming activity in the early Universe is linked to the most massive galaxies in today's cosmos, new research suggests. This "starbursting" activity when the Universe was just a few billion years old appears to have been clamped off by the growth of supermassive black holes. An international team gathered hints of the mysterious "dark matter" in early galaxies to confirm the link. The findings appear in Monthly Notices of the Royal Astronomical Society. ... Using the 12-metre Atacama Pathfinder Experiment telescope in Chile, an international team led by Ryan Hickox of Dartmouth College studied the way distant galaxies from...
  • Weird World! 'Oozing' Alien Planet Is a Super-Earth Wonder [ 55 Cancri e ]

    01/21/2012 5:43:56 PM PST · by SunkenCiv · 29 replies
    SPACE.com ^ | Friday, January 20, 2012 | SPACE.com Staff
    A new look at an alien planet that orbits extremely close to its parent star suggests that the rocky world might not be a scorching hot wasteland, as was thought. In fact, the planet may actually be stranger and wetter than astronomers ever imagined. The exotic planet 55 Cancri e is a relatively close alien planet, just 40 light-years away from Earth in the constellation Cancer (The Crab). The super-dense world circles so close to its host star that it takes a mere 18 hours to complete one orbital lap. Using our solar system for comparison, 55 Cancri e is...
  • New Storage Device Is Very Small, at 12 Atoms

    01/15/2012 10:26:09 PM PST · by neverdem · 17 replies
    NY Times ^ | anuary 12, 2012 | JOHN MARKOFF
    SAN JOSE, Calif. — Researchers at I.B.M. have stored and retrieved digital 1s and 0s from an array of just 12 atoms, pushing the boundaries of the magnetic storage of information to the edge of what is possible. The findings, being reported Thursday in the journal Science, could help lead to a new class of nanomaterials for a generation of memory chips and disk drives that will not only have greater capabilities than the current silicon-based computers but will consume significantly less power. And they may offer a new direction for research in quantum computing. “Magnetic materials are extremely useful...