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Keyword: stringtheory

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  • Man arrested at Large Hadron Collider claims he's from the future

    04/09/2010 7:02:02 PM PDT · by jmcenanly · 44 replies · 2,058+ views
    Crave Cnet ^ | 01 April 2010, 10:33am | Nick Hide
    A would-be saboteur arrested today at the Large Hadron Collider in Switzerland made the bizarre claim that he was from the future. Eloi Cole, a strangely dressed young man, said that he had travelled back in time to prevent the LHC from destroying the world.snip Police said Mr Cole, who was wearing a bow tie and rather too much tweed for his age, would not reveal his country of origin. "
  • Mysterious radio waves emitted from nearby galaxy

    04/14/2010 2:55:48 PM PDT · by TaraP · 72 replies · 2,406+ views
    New Scientist ^ | April 14th, 2010
    There is something strange in the cosmic neighbourhood. An unknown object in the nearby galaxy M82 has started sending out radio waves, and the emission does not look like anything seen anywhere in the universe before. "We don't know what it is," says co-discoverer Tom Muxlow of Jodrell Bank Centre for Astrophysics near Macclesfield, UK. The thing appeared in May last year, while Muxlow and his colleagues were monitoring an unrelated stellar explosion in M82 using the MERLIN network of radio telescopes in the UK. A bright spot of radio emission emerged over only a few days, quite rapidly in...
  • Discovery that quasars don't show time dilation mystifies astronomers

    04/12/2010 8:40:43 PM PDT · by Lorianne · 108 replies · 1,813+ views
    Physorg ^ | 09 March 2010 | Lisa Zyga
    The phenomenon of time dilation is a strange yet experimentally confirmed effect of relativity theory. One of its implications is that events occurring in distant parts of the universe should appear to occur more slowly than events located closer to us. For example, when observing supernovae, scientists have found that distant explosions seem to fade more slowly than the quickly-fading nearby supernovae. The effect can be explained because (1) the speed of light is a constant (independent of how fast a light source is moving toward or away from an observer) and (2) the universe is expanding at an accelerating...
  • Man arrested at Large Hadron Collider claims he's from the future

    04/05/2010 10:24:30 AM PDT · by Sax · 72 replies · 3,066+ views
    CNET UK ^ | 4/1/2010 | Nick Hide
    A would-be saboteur arrested today at the Large Hadron Collider in Switzerland made the bizarre claim that he was from the future. Eloi Cole, a strangely dressed young man, said that he had travelled back in time to prevent the LHC from destroying the world. The LHC successfully collided particles at record force earlier this week, a milestone Mr Cole was attempting to disrupt by stopping supplies of Mountain Dew to the experiment's vending machines. He also claimed responsibility for the infamous baguette sabotage in November last year. Mr Cole was seized by Swiss police after CERN security guards spotted...
  • New Superheavy Element Discovered at Berkley Labs

    04/01/2010 6:31:04 PM PDT · by smokingfrog · 26 replies · 1,137+ views
    www.lbl.gov/Science-Articles/ ^ | 4-1-10 | Sciocco D. Aprile
    BERKELEY, CA Discovery of two new "superheavy" elements has been announced by scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory. Element 120 and its immediate decay product, element 121, were discovered at Berkeley Lab's 88-Inch Cyclotron by bombarding targets of lead with an intense beam of high-energy krypton ions. Although both new elements almost instantly decay into other elements, the sequence of decay events is consistent with theories that have long predicted an "island of stability" for nuclei with approximately 187 protons and 199 neutrons. "We jumped over a sea of instability onto an island of stability...
  • Large Hadron Atom Smasher Reaches Near Speed of Light

    03/31/2010 12:41:00 AM PDT · by ErnstStavroBlofeld · 90 replies · 1,565+ views
    The Daily Galaxy ^ | 3/30/2010 | The Daily Galaxy
    Scientists celebrated at the world's biggest atom smasher at the European Organization for Nuclear Research (CERN) near Geneva on Tuesday as they started colliding particles at record energy levels mimicking conditions close to the Big Bang, opening a new era in the quest for the secrets of the universe. The European Organisation for Nuclear Research (CERN) said it had unleashed the unprecedented bursts of energy on the third attempt, as beams of protons thrust around the 27-kilometre (16.8-mile) accelerator collided at close to the speed of light. "This is physics in the making, the beginning of a new era, we...
  • Particle Weapons 101

    03/29/2010 11:42:23 PM PDT · by ErnstStavroBlofeld · 20 replies · 1,171+ views
    Physics Post ^ | 12/31/2001 | unkown
    WHAT KIND OF BEAM TO USE WANT? There are two types of particle beams; the one used depends on what the weapon is used for, either exoatmospheric or endoatmospheric. Exoatmospheric are in conditions where there is nothing, like space or a vacuum tube. Endoatmospheric are in conditions where an atmosphere exists, like on Earth or orbiting Earth. For exoatmospheric use the beam that exits the weapon must be neutral, have no charge, to prevent beam divergence. Beam divergence happens when a beam of charged particles increases in diameter as it travels through empty space. This is not good. If the...
  • Cosmologists say universe leaves them in the dark

    10/23/2003 1:56:32 PM PDT · by LibWhacker · 30 replies · 641+ views
    The News-Sentinel (Fort Wayne) ^ | 10/20/03 | Tom Siegfried (Dallas Morning News)
    CLEVELAND - (KRT) - The day may come, some cosmologists fear, when they'd be better off as cosmetologists. You know the difference, of course. Cosmetologists are experts at makeup. Cosmologists are experts at making up stories about the universe. For many decades, at least, cosmologists couldn't do much more than make up stories. After the birth of scientific cosmology early in the last century, cosmologists based their theories on next to nothing, other than Einstein's equations for gravity and the observation that the universe seemed to be expanding. In the mid-1960s, though, radiotelescopes detected a faint glow of radiation in...
  • Gravity Emerges from Quantum Information, Say Physicists

    03/27/2010 11:06:22 AM PDT · by LibWhacker · 70 replies · 1,508+ views
    The new role that quantum information plays in gravity sets the scene for a dramatic unification of ideas in physics One of the hottest new ideas in physics is that gravity is an emergent phenomena; that it somehow arises from the complex interaction of simpler things. A few month's ago, Erik Verlinde at the the University of Amsterdam put forward one such idea which has taken the world of physics by storm. Verlinde suggested that gravity is merely a manifestation of entropy in the Universe. His idea is based on the second law of thermodynamics, that entropy always increases over...
  • Found: 90% of the distant Universe

    03/25/2010 6:50:58 PM PDT · by zeugma · 35 replies · 1,108+ views
    Discover ^ | March 24th, 2010 | Phil Plait
    Found: 90% of the distant Universe This is fascinating news: 90% of the distant Universe was thought to be missing, but it was recently found. And what’s weird is, it was found to be in the red. Quite literally. [Note: before you ask, this has nothing to do with dark matter. See below!] GOODS_deepfield First, a bit of background. Galaxies are filled with hydrogen gas, and that gas is a major component of the clouds that collapse to form stars. When that happens, the hot stars ionize the gas: the flood of ultraviolet light strips the electron away from the...
  • Safer nuclear reactors could result from Los Alamos research (healing power)

    03/25/2010 12:52:20 PM PDT · by decimon · 6 replies · 269+ views
    DOE/Los Alamos National Laboratory ^ | Mar 25, 2010 | Unknown
    'Loading-unloading' effect of grain boundaries key to repair of irradiated metalSelf-repairing materials within nuclear reactors may one day become a reality as a result of research by Los Alamos National Laboratory scientists. In a paper appearing today in the journal Science, Los Alamos researchers report a surprising mechanism that allows nanocrystalline materials to heal themselves after suffering radiation-induced damage. Nanocrystalline materials are those created from nanosized particles, in this case copper particles. A single nanosized particle—called a grain—is the size of a virus or even smaller. Nanocrystalline materials consist of a mixture of grains and the interface between those grains,...
  • Light Bends Matter, Surprising Scientists

    03/25/2010 10:57:48 AM PDT · by neverdem · 31 replies · 1,155+ views
    LiveScience ^ | 24 March 2010 | Clara Moskowitz
    After 72 hours of exposure to ambient light, strands of nanoparticles twisted and bunched together. Credit: Nicholas Kotov Light can twist matter, according to a new study that observed ribbons of nanoparticles twisting in response to light. Scientists knew matter can cause light to bend – prisms and glasses prove this easily enough. But the reverse phenomenon was not shown to occur until recently. The researchers assembled strings of nanoparticles, which are tiny clumps of matter on the scale of nanometers (one nanometer is one billionth of a meter). In a darkened lab, the scientists linked nanoparticles together into...
  • Staring into the Singularity

    07/30/2002 5:45:59 PM PDT · by sourcery · 46 replies · 1,452+ views
    Sysopmind.com ^ | 11/18/1996-05/27/2001 | Eliezer Yudkowski
    From The Low Beyond. ©1996-©2001 by Eliezer S. Yudkowsky.  All rights reserved. The address of this document is http://sysopmind.com/singularity.html. If you found it elsewhere, please visit the foregoing link for the most recent version.   Created:  11/18/1996   Updated:  05/27/2001 The short version:If computing speeds double every two years,what happens when computer-based AIs are doing the research?Computing speed doubles every two years. Computing speed doubles every two years of work. Computing speed doubles every two subjective years of work. Two years after Artificial Intelligences reach human equivalence, their speed doubles. One year later, their speed doubles again. Six months -...
  • New Proof Unknown "Structures" Tug at Our Universe

    03/22/2010 8:02:28 PM PDT · by Feline_AIDS · 72 replies · 1,643+ views
    National Geographic ^ | 22 March 2010 | NatGeo
    "Dark flow" is no fluke, suggests a new study that strengthens the case for unknown, unseen "structures" lurking on the outskirts of creation. In 2008 scientists reported the discovery of hundreds of galaxy clusters streaming in the same direction at more than 2.2 million miles (3.6 million kilometers) an hour. This mysterious motion can't be explained by current models for distribution of mass in the universe. So the researchers made the controversial suggestion that the clusters are being tugged on by the gravity of matter outside the known universe. Now the same team has found that the dark flow extends...
  • The Best Refrigerator Magnet Ever?

    03/20/2010 7:31:27 PM PDT · by neverdem · 23 replies · 1,551+ views
    ScienceNOW ^ | March 19, 2010 | Adrian Cho
    Enlarge Image Limit breaker? The crystal structure of Fe16N2, which one group of researchers says beats the predicted limit for magnetism in a material. Credit: Jian-Ping Wang PORTLAND, OREGON—There are limits to just how magnetic a material can be. Or so researchers thought. A compound of iron and nitrogen is about 18% more magnetic than the most magnetic material currently known, a team of materials scientists claims. If such magnets could be produced commercially, they could, for example, allow electronics manufactures to equip computer hard drives with smaller "write heads" capable of cramming them with more information. Other researchers...
  • Record Set for Speedy Protons

    03/20/2010 9:03:41 AM PDT · by Ernest_at_the_Beach · 7 replies · 221+ views
    The New York Times ^ | March 19, 2010 | DENNIS OVERBYE
    The world’s largest particle accelerator is feeling its oats. Scientists at CERN, the European nuclear research agency, announced Friday morning that they had accelerated beams of protons at the accelerator, the Large Hadron Collider near Geneva, to energies of 3.5 trillion electron volts. That is a new record, three times the energy of any other machine on earth, and means that the collider, after 15 years and $10 billion, is on the verge of beginning to do physics experiments.
  • Geneva atom smasher sets record for beam energy

    03/21/2010 2:58:35 AM PDT · by ErnstStavroBlofeld · 11 replies · 410+ views
    AFP via Yahoo News ^ | 3/20/2010 | AFP via Yahoo News
    Operators of the world's largest atom smasher on Friday ramped up their massive machine to three times the energy ever previously achieved, in the run-up to experiments probing the secrets of the universe. The European Organization for Nuclear Research, or CERN, said beams of protons circulated at 3.5 trillion electron volts in both directions around the 27-kilometer (17-mile) tunnel housing the Large Hadron Collider under the Swiss-French border at Geneva. The next major development is expected in a few days when CERN starts colliding the beams in a new round of research to examine the tiniest particles and forces within...
  • Quivering Gizmo Ushers in Quantum Machines

    03/20/2010 8:29:47 PM PDT · by neverdem · 11 replies · 757+ views
    ScienceNOW ^ | March 17, 2010 | Adrian Cho
    Enlarge Image Springboard. This little vibrating widget has been eased into the simplest quantum state of motion. Credit: O'Connell et al., Nature, Advance Online Publication (2010) The weird rules of quantum mechanics state that a tiny object can absorb energy only in discrete amounts, or quanta, and can literally be in two places simultaneously. Those mind-bending tenets have been amply demonstrated in experiments with electrons, photons, atoms, and molecules. Ironically, though, physicists have never observed such bizarre quantum-mechanical effects in the motion of a human-made mechanical device. Now, Andrew Cleland, John Martinis, and colleagues at the University of California,...
  • 'Cold Fusion' Moves Closer to Mainstream Acceptance

    03/22/2010 9:18:00 AM PDT · by Ben Mugged · 43 replies · 1,361+ views
    Science Daily ^ | Mar. 22, 2010 | Unattributed
    A potential new energy source so controversial that people once regarded it as junk science is moving closer to acceptance by the mainstream scientific community. That's the conclusion of the organizer of one of the largest scientific sessions on the topic -- "cold fusion" -- being held here for the next two days in the Moscone Center during the 239th National Meeting of the American Chemical Society (ACS). "Years ago, many scientists were afraid to speak about 'cold fusion' to a mainstream audience," said Jan Marwan, Ph.D., the internationally known expert who organized the symposium. Marwan heads the research firm,...
  • Scientists supersize quantum mechanics

    03/18/2010 9:10:58 PM PDT · by LibWhacker · 28 replies · 720+ views
    Nature ^ | 3/17/10 | Geoff Brumfiel
    Largest ever object put into quantum state.A team of scientists has succeeded in putting an object large enough to be visible to the naked eye into a mixed quantum state of moving and not moving. Andrew Cleland at the University of California, Santa Barbara, and his team cooled a tiny metal paddle until it reached its quantum mechanical 'ground state' — the lowest-energy state permitted by quantum mechanics. They then used the weird rules of quantum mechanics to simultaneously set the paddle moving while leaving it standing still. The experiment shows that the principles of quantum mechanics can apply...