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Keyword: stringtheory

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  • Big Bang Machine Felled by Frenchman from the Future (quixotic quest to find 'God Particle' fails)

    11/23/2009 7:31:42 AM PST · by SeekAndFind · 16 replies · 532+ views
    Commentary ^ | 11/16/2009 | Anthony Sacramone
    So efforts by scientists to re-create the big bang — that moment, if one can speak of a moment, as in time, before there was time, or at least a decent wristwatch, when energy, or some hot gooey primordial stuff, spewed out a burgeoning universe, eventuating in the birth of galaxies, the advent of life, and the eventual cancellation of Charles in Charge — have failed once again. It seems that the quixotic quest to find Higgs Boson, once thought to be the front man for an Air Supply tribute band, but which turns out to be the “God” particle,”...
  • Scientific Fraud Caused by Social Pressures

    11/21/2009 6:46:20 AM PST · by grey_whiskers · 21 replies · 475+ views
    Softparanorma web site ^ | August 10, 2009 | Dr. Nikolai Bezroukov
    <snip>2.4 Diagnosis #4: The Attraction of Magnificent Academic Trusels. A "trusel" is an idea or a finding that is widely perceived to be true, but which is largely useless (or even of negative value). (The idea that a truth may lack value may be disturbing, but it is true, although it is not a trusel and probably will not be thought to be magnificent.) A "Magnificent Academic Trusel" (MAT) is a trusel that has been widely acknowledged for its intellectual content (explicitly or implicitly), but without a corresponding amount of attention being given to its utility or even to its...
  • Hunting for Planets in the Dark

    11/19/2009 5:31:03 PM PST · by KevinDavis · 10 replies · 228+ views
    Astrobiology Magazine ^ | 11/19/09 | Michael Schirber
    Dark energy isn't good for life in the universe. This mysterious substance, which cosmologists believe makes up around 70 percent of the universe, may eventually pull apart galaxies, then stars and planets, and finally atoms and molecules, in what some call the Big Rip. It’s ironic, then, that the search for dark energy might help in the search for life in the universe. That's because planet hunting through a technique called microlensing requires a similar sort of instrument as a dark energy mission.
  • Scientists develop 'Star Trek phaser'

    11/19/2009 10:29:57 AM PST · by markomalley · 28 replies · 681+ views
    TG Daily ^ | 11/19/2009 | Emma Woollacott
    Its inventors are comparing it to the Star Trek phaser: a way of exploiting an on-off 'switch' in nematodes that paralyzes them when they're exposed to a beam of ultraviolet light. The animals stay paralyzed even when the light is turned off. But when exposed to ordinary light, they become unparalyzed and wake up. It's the first time that photoswitching has been demonstrated in a living animal. The report describes the development and successful testing of a photoswitch composed of the light-sensitive material, dithienylethene. The scientists grew the transparent, pinhead-sized worms - C. elegans - and fed them dithienylethene. When...
  • All Hail The Prophets Of Science: LHC And Our Thinking

    09/23/2008 4:42:13 PM PDT · by Soliton · 7 replies · 307+ views
    As a practising priest, there was great scope for mediation when Reiss took on such a key role in such a renowned scientific institution, but sadly science and religion really do not good bedfellows make. Yet if the CERN experiment succeeds in its quest to re-create the conditions just after the Big Bang, maybe a way can be found to understand the role of a creator in the building blocks of science. Some scientists believe in the concept of a creator at work behind the Big Bang and that among the possible revelations about ‘dark matter’, anti-matter and space-time dimensions...
  • Math theories may hold clues to origin, future of life in universe

    06/09/2009 10:01:50 AM PDT · by ckilmer · 34 replies · 972+ views
    physorg ^ | June 9th, 2009
    Math theories may hold clues to origin, future of life in universe June 9th, 2009 How did we get here and where are we headed? These are some of life's biggest questions. To get the answers, one Kansas State University professor is doing the math. Louis Crane, K-State professor of mathematics, is studying new theories about why the universe is the way it is. He has a grant from the Foundational Questions Institute to study new approaches to the quantum theory of gravity, his primary research area as both a mathematician and a physicist. Crane hopes to uncover implications of...
  • Did a Time-Traveling Bird Sabotage the Collider?

    11/14/2009 10:22:53 AM PST · by sadsacke · 33 replies · 928+ views
    Time ^ | 11-11-09 | Eben Harrell
    While most scientists would write off the event as a freak accident, two esteemed physicists have formulated a theory that suggests an alternative explanation: perhaps a time-traveling bird was sent from the future to sabotage the experiment. Bech Nielsen of the Niels Bohr Institute in Copenhagen and Masao Ninomiya of the Yukawa Institute for Theoretical Physics in Kyoto, Japan, have published several papers over the past year arguing that the CERN experiment may be the latest in a series of physics research projects whose purposes are so unacceptable to the universe that they are doomed to fail, subverted by the...
  • Tweak Gravity: What If There Is No Dark Matter?

    11/08/2009 6:07:35 PM PST · by SunkenCiv · 30 replies · 763+ views
    Scientific American ^ | Thursday, November 5, 2009 | John Matson
    What if the discrepancy arises from a flaw in our theory of gravity rather than from some provider of mass that we cannot see? In the 1980s physicist Mordehai Milgrom of the Weizmann Institute of Science in Rehovot, Israel, proposed a modification to Newtonian dynamics that would explain many of the observational discrepancies without requiring significant mass to be hidden away in dark matter. But it fell short of describing all celestial objects, and to incorporate the full span of gravitational interactions, a modification to Albert Einstein's theory of general relativity is needed. A review article in the November 6...
  • Signature of antimatter detected in lightning

    11/07/2009 3:35:23 PM PST · by LibWhacker · 21 replies · 677+ views
    ScienceNews ^ | 11/6/09 | Ron Cowen
    Fermi telescope finds evidence that positrons, not just electrons, are in storms on EarthWashington — Designed to scan the heavens thousands to billions of light-years beyond the solar system for gamma rays, the Fermi Gamma-ray Space Telescope has also picked up a shocking vibe from Earth. During its first 14 months of operation, the flying observatory has detected 17 gamma-ray flashes associated with terrestrial storms — and some of those flashes have contained a surprising signature of antimatter.
  • Baguette Dropped From Bird's Beak Shuts Down The Large Hadron Collider (Really)

    11/05/2009 4:31:31 PM PST · by LibWhacker · 40 replies · 904+ views
    PopSci ^ | 11/05/09 | Stuart Fox
    The Large Hadron Collider, the world's most powerful particle accelerator, just cannot catch a break. First, a coolant leak destroyed some of the magnets that guide the energy beam. Then LHC officials postponed the restart of the machine to add additional safety features. Now, a bird dropping a piece of bread on a section of the accelerator has, according to the Register, shut down the whole operation. The bird dropped some bread on a section of outdoor machinery, eventually leading to significant over heating in parts of the accelerator. The LHC was not operational at the time of the incident,...
  • Finding Critics for Science

    11/04/2009 10:37:40 AM PST · by bs9021 · 16 replies · 370+ views
    Accuracy in Academia ^ | November 4, 2009 | Allie Winegar Duzett
    Finding Critics for Science Allie Winegar Duzett, November 4, 2009 There are many fields with rigorous critics; many writers make a living critiquing music, dance, art, and literature. At Accuracy in Media and other media watchdog groups, employees critique the claims of major news organizations. But one crucial field regularly goes without any public criticism: the field of science, and scientific discovery. “Science lacks for critics,” David Berlinski claimed at a recent Heritage Foundation Bloggers’ Briefing. “It is really remarkable that in the sense in which literature or dance or music has always entered public consciousness with a very rich...
  • Muslims, Jews and the Nobel Prize

    11/03/2009 5:26:23 AM PST · by SJackson · 21 replies · 427+ views
    Jerusalem Post ^ | 11-3-09 | URIYA SHAVIT
    Next month, Prof. Ada Yonath will be awarded the Nobel Prize in chemistry, becoming the fifth Israeli scientist to win this award. This has sharpened, once again, the grim statistics regarding the scarcity of Nobel laureates in the Muslim and Arab worlds. While Jews, who are only around 0.2 percent of the world population, have won a quarter of all Nobel Prizes awarded in the sciences, Muslims, who are one quarter of the world population, have won only a handful, even by the most generous accounts. And while relative to its size, Israel's tiny academia has been the world's leading...
  • Huge Galaxy Cluster Hints at Universe's Skeleton

    11/03/2009 9:19:57 AM PST · by NormsRevenge · 12 replies · 621+ views
    Space.com ^ | 11/3/09
    A gigantic, previously unknown set of galaxies has been found in the distant universe, shedding light on the underlying skeleton of the cosmos. "Matter is not distributed uniformly in the universe," said Masayuki Tanaka, an astronomer with the European Southern Observatory (ESO) who helped discover the galactic assemblage. "In our cosmic vicinity, stars form in galaxies and galaxies usually form groups and clusters of galaxies." But those collections of matter are just small potatoes compared to larger structures long-theorized to exist. "The most widely accepted cosmological theories predict that matter also clumps on a larger scale in the so-called 'cosmic...
  • Rethinking relativity: Is time out of joint?

    11/02/2009 9:29:43 PM PST · by Kevmo · 58 replies · 1,274+ views
    New Scientist ^ | 21 October 2009 | Rachel Courtland
    Rethinking relativity: Is time out of joint? EVER since Arthur Eddington travelled to the island of Príncipe off Africa to measure starlight bending around the sun during a 1919 eclipse, evidence for Einstein’s theory of general relativity has only become stronger. Could it now be that starlight from distant galaxies is illuminating cracks in the theory’s foundation? .... Yet it is still not clear how well general relativity holds up over cosmic scales, at distances much larger than the span of single galaxies. Now the first, tentative hint of a deviation from general relativity has been found. While the evidence...
  • Green sits in Hawking's chair

    10/29/2009 7:16:36 PM PDT · by SunkenCiv · 11 replies · 402+ views
    Cosmic Variance 'blog ^ | October 27th, 2009 | "daniel"
    As we recently noted, Stephen Hawking has stepped down from the Lucasian Chair at Cambridge. The chair didn't stay empty for long. It has been announced that Michael Green will become the new Lucasian Professor. Green is one of the pioneers of string theory, and is already at Cambridge. I'm not sure he even switches offices, or chairs for that matter. Hawking did seminal work in general relativity. He proved a number of singularity theorems (with Roger Penrose). He wrote The Large Scale Structure of Spacetime (with George Ellis). John Wheeler conjectured that quiescent black holes have "no hair" (i.e.,...
  • Cox on Colbert [Brian Cox was on The Colbert Report]

    10/29/2009 7:13:22 PM PDT · by SunkenCiv · 1 replies · 383+ views
    Bad Astronomy 'blog ^ | Thursday, October 29, 2009 | Phil Plait
    As promised, Brian Cox was on The Colbert Report last night, and hit it out of the park. The whole show was better than average (which is saying a lot) but Brian truly rocked! If you missed it (and live in the States) the whole episode is online (Brian's segment is about 13:50 into the episode). Comedy Central won't allow embedding the whole show (sigh), and Brian's segment isn't separated out on the CC site, but right before he was on Colbert ragged on physics and the LHC... In the full segment, they talk about Brian's book Why E=mc2, which...
  • Gamma-ray burst restricts ways to beat Einstein's relativity

    10/29/2009 6:58:41 PM PDT · by SunkenCiv · 15 replies · 568+ views
    Symmetry ^ | Thursday, October 29, 2009 | David Harris
    When the Fermi team did the calculations, using the most conservative estimates for how astrophysics plays into this, they determined that the mass scale must be at least 1.2 times the Planck mass, and by using reasonable but less conservative assumptions, they derived lower limits on the mass scale of up to 100 times the Planck mass. One way to interpret this is to say that there is no variation of the speed of light coming from any quantum gravity effects at less than 1.2 times the Planck mass. And given that some quantum gravity frameworks predict that effects should...
  • Mega-star explosion most distant object ever seen

    10/29/2009 8:03:26 AM PDT · by GL of Sector 2814 · 29 replies · 1,011+ views
    Yahoo! News ^ | Oct 28, 2009 | Yahoo
    PARIS (AFP) – It took 13 billion years to reach Earth, but astronomers have seen the light of an exploding mega-star that is the most distant object ever detected, two studies published Thursday reported. The stunning gamma-ray burst (GRB) was observed by two teams of researchers in April, and opens a window onto a poorly known period when the Universe was in its infancy.
  • Trapped light rattles its cage

    10/19/2009 12:32:56 AM PDT · by neverdem · 5 replies · 587+ views
    Nature News ^ | 18 October 2009 | Zeeya Merali
    Crystals that can confine both light and vibrations could create better biosensors.The crystal traps vibrations and light in the same place.Eichenfield M., et al. Light and mechanical vibrations have been imprisoned together for the first time ever in the same place. An artificial crystal that traps both could lead to ultra-sensitive biosensors, create an interface for devices on a chip and provide an elegant cooling mechanism to help test quantum limits. The communications industry has long used specially patterned materials, called photonic crystals, to guide light through optical fibres. Similar structures, known as phononic crystals, manipulate mechanical vibrations and are...
  • Black Hole Conditions, Right Here on Earth

    10/19/2009 9:19:33 PM PDT · by neverdem · 4 replies · 515+ views
    ScienceNOW Daily News ^ | 19 October 2009 | Phil Berardelli
    Enlarge ImageBoom! After being hit with laser beams, a small plastic pellet (sunlike object) emits x-rays, some of which bombard a pellet of silicon (blue and purple). Credit: Adapted from S. Fujioka et al., Nature Physics, Advance Online Publication A team of researchers has created conditions analogous to those found outside of a black hole by blasting a plastic pellet with high-energy laser beams. The advance should sharpen insights into the behavior of matter and energy in extreme conditions. Astronomers can't observe black holes directly because their immense gravity won't let light escape. Instead, they have focused on what...
  • Considering Thorium as an Alternative Fuel for Nuclear Energy

    10/19/2009 10:03:34 AM PDT · by Willie Green · 16 replies · 561+ views
    NY Times ^ | October 20, 2009 | LISA PHAM
    PARIS — For decades, scientists have dreamed about turning thorium — an element that is less radioactive and produces less nuclear waste than uranium — into an alternative fuel for nuclear energy. Recent technological developments may be bringing the dream closer to reality. As a naturally occurring metal that is substantially more abundant than uranium, its most common isotopic form, thorium-232, can be converted by irradiation to uranium-233, which is suitable for use in nuclear fuels. The United States is estimated to have 400,000 tons of thorium, Turkey 344,000 tons and India 319,000 tons, according to a 2008 joint report...
  • Researchers create portable black hole: Mini-hole made of metamaterials ensnares microwave...

    10/16/2009 9:45:25 PM PDT · by neverdem · 14 replies · 802+ views
    Nature News ^ | 15 October 2009 | Geoff Brumfiel
    Mini-hole made of metamaterials ensnares microwave light.The artificial 'black hole' sucks up microwaves.Q. Cheng and T. J. Cui Physicists have created a black hole for light that can fit in your coat pocket. Their device, which measures just 22 centimetres across, can suck up microwave light and convert it into heat. The hole is the latest clever device to use 'metamaterials', specially engineered materials that can bend light in unusual ways. Previously, scientists have used such metamaterials to build 'invisibility carpets' and super-clear lenses. This latest black hole was made by Qiang Chen and Tie Jun Cui of Southeast University...
  • Physicists Calculate Number of Parallel Universes

    10/18/2009 4:06:14 AM PDT · by LibWhacker · 73 replies · 1,941+ views
    PhysOrg ^ | 10/16/09 | Lisa Zyga
    The strongest limit on the number of possible universes is the human ability to distinguish between different universes. (PhysOrg.com) -- Over the past few decades, the idea that our universe could be one of many alternate universes within a giant multiverse has grown from a sci-fi fantasy into a legitimate theoretical possibility. Several theories of physics and astronomy have hypothesized the existence of a multiverse made of many parallel universes. One obvious question that arises, then, is exactly how many of these parallel universes might there be. In a new study, Stanford physicists Andrei Linde and Vitaly Vanchurin have calculated...
  • Weird "Particles" Spotted in Hot New Material

    10/15/2009 11:36:01 PM PDT · by neverdem · 21 replies · 1,096+ views
    ScienceNOW Daily News ^ | 14 October 2009 | Adrian Cho
    In the past 5 years, no material has excited more interest from condensed matter physicists than graphene, a sheet of carbon only one atom thick. Electrons zing through the stuff in an unusual way, and they flow so easily that graphene could someday replace silicon and other semiconductors as the material of choice for microchips. Now, a team of physicists has taken a key step in fulfilling graphene's promise as a hotbed of exotic physics by showing that the electrons within it can team up to behave like particles with a fraction of the electron's charge. The effect is called...
  • Mystery Emissions Spotted at Edge of Solar System

    10/16/2009 5:56:09 AM PDT · by decimon · 26 replies · 999+ views
    Live Science ^ | Oct 15, 2009 | Clara Moskowitz
    In the murky boundary between our solar system and the rest of the galaxy, scientists have spotted a bright band of surprising high-energy emissions. The results come from the first all-sky map created by NASA's new Interstellar Boundary Explorer (IBEX) spacecraft, which launched in October 2008. While orbiting Earth, IBEX monitors incoming neutral atoms that originate billions of miles away at the solar system's edge to learn about the interaction between the sun and the cold expanse of space. "The IBEX results are truly remarkable, with emissions not resembling any of the current theories or models of this never-before-seen region,"...
  • Brilliant Physicists Claim the Failure of the Super Collider May Have Been Ordained by God

    10/16/2009 12:34:29 AM PDT · by bogusname · 22 replies · 1,151+ views
    BCN ^ | Oct 16, 2009 | Teresa Neumann
    Two physicists speculate God—or "time agents from the future"—shut it down to keep them from discovering the God Particle. REPORTER'S NOTE: I've come across a lot of quirky articles in publishing intriguing news, but this rates up there with the most odd of all. What is odd, is that two such brilliant scientists would publicly proclaim their hypothesis that God not only exists, but interevened in their scientific endeavors. Wow. Not only that, but the addendum—that it could have been God OR "time agents from the future"—made me wonder. If these men were schooled in the divine supernatural, they may...
  • Discovery of ‘magnetricity’ marks important advance in physics

    10/15/2009 2:51:38 PM PDT · by Free ThinkerNY · 35 replies · 1,212+ views
    timesonline.co.uk ^ | Oct. 15, 2009 | Hannah Devlin
    Scientists have generated a magnetic version of electricity, which they have called magnetricity. The discovery marks an important advance in theoretical physics. The existence of magnetic “charges” has been predicted for nearly 70 years but has never been observed in practice. The study was led by Professor Steve Bramwell, of the London Centre for Nanotechnology. He said: “It is not often in the field of physics you get the chance to ask, ‘How do you measure something?’, and then go on to prove a theory unequivocally. This is a very important step to establish that magnetic charge can flow like...
  • First black hole for light created on Earth

    10/14/2009 11:23:47 AM PDT · by LibWhacker · 33 replies · 927+ views
    New Scientist ^ | 10/14/09 | Anil Ananthaswamy
    An electromagnetic "black holeMovie Camera" that sucks in surrounding light has been built for the first time. The device, which works at microwave frequencies, may soon be extended to trap visible light, leading to an entirely new way of harvesting solar energy to generate electricity. A theoretical design for a table-top black hole to trap light was proposed in a paper published earlier this year by Evgenii Narimanov and Alexander Kildishev of Purdue University in West Lafayette, Indiana. Their idea was to mimic the properties of a cosmological black hole, whose intense gravity bends the surrounding space-time, causing any nearby...
  • Could the Large Hadron Collider be held back by its own future?

    10/13/2009 3:53:11 PM PDT · by bruinbirdman · 55 replies · 1,608+ views
    The Telegraph ^ | 10/13/2009 | Richard Alleyne
    Its discoveries could be so "abhorrent to nature" that they are coming back to stop their own creation. Forget the far-fetched belief that it will create a black hole, two distinguished physicists have gone even further claiming nature itself is stopping the troubled £4.4billion project from getting off the ground. In a theory reminiscent of the time travelling film Back to the Future, the theoretical physicists Holger Nielsen, from Denmark, and Masao Ninomiya, from Japan, have concluded that its discoveries could be so "abhorrent to nature" that they are coming back to stop their own creation. They have outlined their...
  • The story of the Gömböc

    10/13/2009 7:49:45 AM PDT · by BGHater · 10 replies · 650+ views
    Millennium Mathematics Project ^ | September 2009 | Marianne Freiberger
    This article is also available as a podcast. A Gömböc is a strange thing. It looks like an egg with sharp edges, and when you put it down it starts wriggling and rolling around with an apparent will of its own. Until quite recently, no-one knew whether Gömböcs even existed. Even now, Gábor Domokos, one of their discoverers, reckons that in some sense they barely exists at all. So what are Gömböcs and what makes them special? Balancing act The defining feature of a Gömböc is the fact that it's got just two points of equilibrium: one is stable and...
  • A Test for Exotic Propulsion?

    10/12/2009 1:33:28 PM PDT · by LibWhacker · 22 replies · 842+ views
    Centauri-Dreams ^ | 10/12/09 | Paul Gilster
    Can we calculate the gravitational field of a mass moving close to the speed of light? Franklin Felber (Starmark Inc) believes he can, with implications for propulsion. Back in 2006 we looked briefly at Felber’s work, describing what the physicist believes to be a repulsive gravitational field that emerges from his results. Felber discussed the matter at the Space Technology and Applications International meeting that year, where he presented his calculations of the ‘relativistically exact motion of a payload in the gravitational field of a source moving with constant velocity.’ Above a certain critical velocity, Felber believes, any mass...
  • Hadron Collider physicist Adlene Hicheur charged with terrorism

    10/12/2009 9:52:25 PM PDT · by bruinbirdman · 66 replies · 4,115+ views
    The Times ^ | 10/13/2009 | Charles Bremner and Adam Sage in Paris
    A French physicist with the European atomic research centre near Geneva was charged with terrorism offences by a Paris judge last night after investigators said that he offered to work with the North African branch of al-Qaeda. Adlène Hicheur, 32, who is of Algerian origin, was arrested last week with his younger brother after intelligence agents intercepted his alleged internet contacts with al-Qaeda in the Islamic Maghreb. The physicist, who works at the giant atomic collider at CERN (European Organisation for Nuclear Research), which straddles Swiss and French territory, told the Islamic group that he was interested in committing an...
  • The Collider, the Particle and a Theory About Fate

    10/13/2009 1:13:12 AM PDT · by LibWhacker · 24 replies · 996+ views
    NYTimes ^ | 10/12/09 | Dennis Overbye
    More than a year after an explosion of sparks, soot and frigid helium shut it down, the world’s biggest and most expensive physics experiment, known as the Large Hadron Collider, is poised to start up again. In December, if all goes well, protons will start smashing together in an underground racetrack outside Geneva in a search for forces and particles that reigned during the first trillionth of a second of the Big Bang. Then it will be time to test one of the most bizarre and revolutionary theories in science. I’m not talking about extra dimensions of space-time, dark matter...
  • ON MONDAY VENT AT THE NOBEL COMMITTEE IN NORWAY BY PHONE FOR FREE!!!!!!!

    10/09/2009 11:37:40 PM PDT · by rf11404 · 18 replies · 638+ views
    rf11404
    On Monday Morning USE FREE 411 at 1-800-373-3411 and after listening to the ad say "Free Call" then listen to another ad and then call the Nobel Peace Prize Foundation in Norway (47) 22 12 93 00 You will get 5 minutes to vent at them for Free.
  • Element 114 confirmed

    10/03/2009 7:46:52 AM PDT · by neverdem · 26 replies · 832+ views
    Chemistry World ^ | 30 September 2009 | Phillip Broadwith
    US scientists have confirmed the discovery of element number 114, first made over a decade ago by a team in Russia. By smashing a high energy beam of calcium-48 ions into a plutonium-242 target, the US team managed to detect two nuclei of element 114, which is predicted by some to be bordering the so-called 'island of stability' for superheavy atoms.Yuri Oganessian and his team at Dubna, Russia, were the first to claim to have created nuclei of element 114 - but any such claim has to be thoroughly verified and the experiments repeated independently before the element can be considered for admission...
  • Super-thin nanowires made inside nanotubes

    09/29/2009 11:55:59 PM PDT · by neverdem · 5 replies · 553+ views
    Chemistry World ^ | 29 September 2009 | Lewis Brindley
    Japanese researchers have made ultra-thin metal wires by growing them inside carbon nanotubes. It is hoped that the research - which can make wires only a single atom in diameter - could provide interesting clues to the best components for future nanoelectronic devices. Atom-thin metal wires show many novel electronic properties - but the wires are so fragile and prone to oxidation that they have been difficult to study. Ryo Kitaura and colleagues at Nagoya University solved this problem by growing the wires encased within protective nanotubes. This means that their properties can be measured and mapped. 'The process [of growing the...
  • Taking the Tally of Curious Triangles

    09/30/2009 12:38:57 AM PDT · by neverdem · 4 replies · 461+ views
    ScienceNOW Daily News ^ | 23 September 2009 | Barry Cipra
    Enlarge ImageObviously. The area of this triangle is 13, a congruent number. Credit: L. Blizard/Science Quick! What do the numbers 5, 6, 7, 13, 14, 15, 20, 21, 22, and 23 have in common? If you said they're all "congruent" numbers--numbers related to the areas of certain triangles--then you may be one of those folks who scored an 800 on your math SAT. Even if that answer didn't leap to mind, you may be intrigued to know that mathematicians have now cataloged the congruent numbers--which are easy to define but not so easy to spot--up to a trillion. A...
  • Magnetized Gas Points to New Physics

    09/29/2009 12:47:47 AM PDT · by neverdem · 18 replies · 734+ views
    ScienceNOW Daily News ^ | 18 September 2009 | Adrian Cho
    Enlarge ImagePeer pressure. Magnetic domains in steel (vertical bans) arise when neighboring electrons point their magnetic poles in the same direction. Credit: Zureks, Chris Vardon/Wikimedia It would be tough to stick it to your refrigerator, but an ultra-cold gas magnetizes itself just as do metals such as iron or nickel, a team of atomic physicists reports. That cool trick shows that the messy physics within solids can be modeled with pristine gases, the researchers say. But others are skeptical that the team has actually seen what they claim. Condensed matter physicists can tell you essentially all there is to...
  • Planck telescope's first glimpse

    09/17/2009 9:52:33 AM PDT · by NormsRevenge · 18 replies · 778+ views
    BBC News ^ | 9/17/09 | Jonathan Amos
    The European telescope sent far from Earth to study the oldest light in the Universe has returned its first images. The Planck observatory, launched in May, is surveying radiation that first swept out across space just 380,000 years after the Big Bang. The light holds details about the age, contents and evolution of the cosmos. The new images show off Planck's capabilities now that it has been set up, although major science results are not expected for a couple of years. "The images show first of all that we are working and that we are able to map the sky,"...
  • Nanoparticles could pose threat to humans: scientists

    09/16/2009 12:44:37 PM PDT · by NormsRevenge · 9 replies · 637+ views
    AFP on Yahoo ^ | 9/16/09 | AFP
    VIENNA (AFP) – They can make fabric resistant to stains, improve the taste of food and help drug research, but nanoparticles could also pose a danger to human health, experts warned Wednesday. Susanne Stark, of the Consumer Information Association, told a seminar in the Austrian city of Salzburg that companies should be forced to indicate on labels whether a product contains the tiny particles. "There are more questions than answers on the effects of nanoparticles" on human health, the chemist said. Cosmetic and food products should indicate whether their products contain nanoparticles by 2012, she said. Nanoparticles, measuring no more...
  • Hunting Hidden Dimensions-Black holes, giant and tiny, may reveal new realms of space

    09/16/2009 10:40:33 AM PDT · by BGHater · 7 replies · 412+ views
    Science News ^ | 26 Sep 2009 | Diana Steele
    In many ways, black holes are science’s answer to science fiction. As strange as anything from a novelist’s imagination, black holes warp the fabric of spacetime and imprison light and matter in a gravitational death grip. Their bizarre properties make black holes ideal candidates for fictional villainy. But now black holes are up for a different role: heroes helping physicists assess the real-world existence of another science fiction favorite — hidden extra dimensions of space. Astrophysical giants several times the mass of the sun and midget black holes smaller than a subatomic particle could provide glimpses of an extra-dimensional existence....
  • Mysterious Energy Burst Stuns Astronomers

    09/28/2007 7:38:03 PM PDT · by saganite · 143 replies · 299+ views
    Science Daily ^ | 28 sep 07 | staff
    Science Daily — In a shock finding, astronomers using CSIRO’s Parkes telescope have detected a huge burst of radio energy from the distant universe that could open up a new field in astrophysics. The research team, led by Assistant Professor Duncan Lorimer of West Virginia University, reported its discovery in the journal Science Express. The radio burst appears to have originated at least one-and-a-half billion light-years [500 Mpc] away but was startlingly strong. “Normally the kind of cosmic activity we’re looking for at this distance would be very faint but this was so bright that it saturated the equipment,” said...
  • New Theory Nixes "Dark Energy": Says Time is Disappearing from the Universe

    09/14/2009 4:04:35 AM PDT · by decimon · 69 replies · 1,739+ views
    The Daily Galaxy ^ | September 13, 2009 | Rebecca Sato
    Remember a little thing called the space-time continuum? Well what if the time part of the equation was literally running out? New evidence is suggesting that time is slowly disappearing from our universe, and will one day vanish completely. This radical new theory may explain a cosmological mystery that has baffled scientists for years. Scientists previously have measured the light from distant exploding stars to show that the universe is expanding at an accelerating rate. They assumed that these supernovae are spreading apart faster as the universe ages. Physicists also assumed that a kind of anti-gravitational force must be driving...
  • Grand Central Now Open to All

    09/11/2009 11:44:02 PM PDT · by Swordmaker · 4 replies · 427+ views
    MacResearch ^ | 09/11/2009 | By Drew McCormack
    Apple today made the source code of Grand Central Dispatch available under an Apache open source license. One of the new technologies for concurrency added to Mac OS X 10.6 Snow Leopard, Grand Central is Apple’s attempt to help developers deal with the rise of multi-core. The open sourcing of Grand Central comes as something of a surprise, because it is a core technology in Snow Leopard, and could be seen to give Apple a competitive edge in the new world of multi-core. So why did they do it? Only Apple knows for sure, but there are compelling arguments for...
  • Mice Levitated in Lab

    09/09/2009 11:04:25 AM PDT · by Wardenclyffe · 17 replies · 927+ views
    livescience.com ^ | 09 September 2009 | Charles Q. Choi
    Scientists have now levitated mice using magnetic fields. Scientists working on behalf of NASA built a device to simulate variable levels of gravity. It consists of a superconducting magnet that generates a field powerful enough to levitate the water inside living animals, with a space inside warm enough at room temperature and large enough at 2.6 inches wide (6.6 cm) for tiny creatures to float comfortably in during experiments. The researchers first levitated a young mouse, just three-week-old and weighing 10 grams. It appeared agitated and disoriented, seemingly trying to hold on to something. "It actually kicked around and started...
  • The Non-Expanding Universe

    09/07/2009 9:40:54 AM PDT · by BGHater · 22 replies · 982+ views
    FQXi ^ | 25 Aug 2009 | Kate Becker
    Time doesn’t exist. The universe isn’t really expanding. And if you want a theory of quantum gravity, look to the man who inspired Einstein, says Julian Barbour. For someone who believes time doesn’t exist, Julian Barbour sure has a head for dates. He remembers exactly when he started to have doubts about time: It was October 18, 1963, and he was reading the newspaper. He spotted an article about the physicist Paul Dirac and his quest for a theory of quantum gravity—a theory linking Einstein’s ideas about gravity to the clashing doctrine of quantum mechanics. Today, Barbour is on that...
  • Magnetic monopoles observed for the first time

    09/04/2009 10:45:11 AM PDT · by null and void · 14 replies · 749+ views
    R&D Magazine ^ | Friday, September 4, 2009 | AZoM Materials
    Magnetic nanopoles observed for the first time Magnetic monopole Researchers from the Helmholtz-Zentrum Berlin für Materialien und Energie have, in cooperation with colleagues from Dresden, St. Andrews, La Plata and Oxford, for the first time observed magnetic monopoles and how they emerge in a real material. Results of their research are being published in the journal Science. Magnetic monopoles are hypothetical particles proposed by physicists that carry a single magnetic pole, either a magnetic North pole or South pole. In the material world this is quite exceptional because magnetic particles are usually observed as dipoles, north and south combined. However...
  • Particle imbalance may upset the apple cart - Report hints at the existence of a new and massive...

    09/01/2009 11:08:54 AM PDT · by neverdem · 31 replies · 1,289+ views
    Science News ^ | August 26th, 2009 | Ron Cowen
    Report hints at the existence of a new and massive elementary particle In a weak moment, researchers have found an unexpected asymmetry in particle production that could hint at exotic physics. The tentative evidence, announced August 21, could be the fingerprint of a massive elementary particle that would help unify three of the four known forces in nature. The physicists collected data for nearly a decade at the Belle particle accelerator experiment in Tsukuba, Japan. In the experiment, known as a B factory, beams of electrons and positrons collide to produce millions of pairs of B mesons and anti-B mesons....
  • Single molecule's stunning image

    08/28/2009 7:48:11 AM PDT · by sig226 · 72 replies · 2,171+ views
    BBC ^ | 8/28/09 | Jason Palmer
    The detailed chemical structure of a single molecule has been imaged for the first time, say researchers. The physical shape of single carbon nanotubes has been outlined before, using similar techniques - but the new method even shows up chemical bonds.
  • IBM takes first 3D image of atomic bonds

    08/27/2009 9:26:53 PM PDT · by wastedyears · 22 replies · 1,090+ views
    Gizmodo ^ | Aug 27, 2009 | Jack Loftus
    I'm going to leave this as link-only.