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Keyword: stringtheory

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  • Astronomers detect earliest galaxies

    01/05/2010 10:16:27 AM PST · by decimon · 8 replies · 691+ views
    Caption: This composite color image is of the new infrared Hubble Ultradeep Field taken at 1.0 micron (blue), 1.25 micron (green), and 1.6 micron (red) with the Wide Field Camera 3 (WFC3/IR) aboard the Hubble Space Telescope. Highlighted are the record-breaking high redshift galaxies, where the redshift "z"indicates the amount of stretching the light underwent on its voyage through the expanding universe. Higher redshift means larger distance and hence looking further back in time. The newly found objects are at z~7 (700 million years after the Big Bang: light blue circles) and z~8 (600 million years: dark blue circles) Credit:...
  • The politicizing of science

    12/25/2009 6:34:53 PM PST · by ricks_place · 7 replies · 653+ views
    San Gabriel Valley Tribune ^ | 12/25/2009 | Thomas Sowell
    SCIENCE is one of the great achievements of the human mind and the biggest reason why we live not only longer but more vigorously in our old age, in addition to all the ways in which it provides us with things that make life easier and more enjoyable. Like anything valuable, science has been seized upon by politicians and ideologues, and used to forward their own agendas. This started long ago, as far back as the 18th century, when the Marquis de Condorcet coined the term "social science" to describe various theories he favored. In the 19th century, Karl Marx...
  • Berkeley High May Cut Out Science Labs (Benefits white students- "redesigned" to close gap)

    12/27/2009 10:55:23 AM PST · by civilwar2 · 57 replies · 2,315+ views
    East Bay Express ^ | 12-23-09 | Eric Klein
    The proposal to put the science-lab cuts on the table was approved recently by Berkeley High's School Governance Council, a body of teachers, parents, and students who oversee a plan to change the structure of the high school to address Berkeley's dismal racial achievement gap, where white students are doing far better than the state average while black and Latino students are doing worse.The full plan to close the racial achievement gap by altering the structure of the high school is known as the High School Redesign. It will come before the Berkeley School Board as an information item at...
  • The Problem with Warp Drive

    12/28/2009 6:40:01 PM PST · by KevinDavis · 34 replies · 1,441+ views
    Paul Titze, who somehow finds time to write the excellent Captain InterStellar blog when not preoccupied with his maritime duties in Sydney, passed along a 2009 paper on warp drives yesterday that I want to be sure to consider before the year is over. Warp drives as in Miguel Alcubierre’s notion of a method of reaching speeds that are faster than light. The Star Trek echo in the choice of names was playful and intentional on Alcubierre’s part, and the physicist kicked off a cottage industry in exotic spacetimes and their geometries when he used it in a 1994 paper...
  • Video: Simulation Renders Entire Known Universe (Woah!)

    12/18/2009 8:11:16 PM PST · by SMCC1 · 12 replies · 892+ views
    PopSci ^ | 12/17/2009 | PopSci
    "Everyone loves a good road movie, whether it's Hope and Crosby or Fonda and Hopper. But the scope of those films pales in comparison to the ground covered by the Hayden Planetarium's new video, The Known Universe. The video starts in Tibet and zooms out through time and space until it shows well, the entire known universe. The video, created for the new Rubin Art Museum exhibit Visions of the Cosmos: From the Milky Ocean to an Evolving Universe, uses over a decade of data collected by researchers at the planetarium. Called the Digital Universe Atlas, the data encompasses the...
  • Key to the universe found on the Iron Range? [WIMP scatters detected?]

    12/18/2009 6:56:27 PM PST · by SunkenCiv · 18 replies · 843+ views
    Star Tribune ^ | Friday, December 18, 2009 | Bob Von Sternberg
    Scientists announced Thursday that they believe they have detected evidence of dark matter in data collected at an underground physics lab in Soudan... According to the Department of Energy's Fermilab, which is conducting the search for dark matter at the Soudan lab, "judging by the way galaxies rotate, scientists have known for 70 years that the matter we can see does not provide enough gravitational pull to hold the galaxies together. There must exist some form of matter that does not emit or reflect light." In the announcement, the lab said the Cryogenic Dark Matter Search experiment has "detected...
  • Deputies: Cache of 60 stolen gnomes found.

    12/17/2009 6:27:17 PM PST · by GSP.FAN · 37 replies · 1,937+ views
    UPI ^ | Dec. 17, 2009 | UPI
    MOUNT VERNON, Wash., Dec. 17 (UPI) -- A string of lawn gnome disappearances in Washington state was solved when winds blew down a fence around the yard where they were being kept, authorities said. Lisa Soneda of Mount Vernon said her daughter told her this month that the fence separating her back yard from that of her next-door neighbor had blown down to reveal an unusual sight,
  • Metal atoms in carbon nanotubes caught on film

    12/11/2009 10:20:28 PM PST · by neverdem · 17 replies · 1,089+ views
    Chemistry World ^ | 07 December 2009 | Simon Hadlington
    In a remarkable home movie, an international team of researchers has filmed individual metal atoms as they move around and react within the confines of a carbon nanotube. As well as demonstrating the power of the imaging technique, the work has shown that the interior of carbon nanotubes may not be as inert as previously assumed.Andrey Chuvilin from the University of Ulm in Germany and colleagues trapped single atoms of the heavy metal dysprosium within hollow fullerene spheres made up of 82 carbon atoms, and enclosed a series of these dysprosium-seeded cages within single-walled carbon nanotubes, with the fullerenes stringing themselves along the...
  • A black future

    12/05/2009 4:26:01 PM PST · by KevinDavis · 82 replies · 1,758+ views
    ScienceNews ^ | 12/19/09 | Tom Siegfried
    Shortly after the first of the year (if not already), the Large Hadron Collider — the most powerful particle accelerator ever built — will smash protons together at record energies. If the Earth remains intact, doomsayers will once again have been falsified. Every time they forecast the demise of the planet, those prophets of Earthly annihilation prove themselves no more foresightful than mortgage bankers or phony psychics.
  • [Black holes explained?] Black holes are cosmic factories for building galaxies

    11/30/2009 7:20:07 PM PST · by bruinbirdman · 31 replies · 1,274+ views
    The Telegraph ^ | 11/30/2009
    The new research may help explain why large galaxies tend to have super-massive black holes at their cores. Astronomers have long wanted an answer to the chicken-and-egg question of what comes first, a super-massive black hole or the stars surrounding it. A new observation of a far away object five billion light years from Earth may now help to solve the riddle. The object is a quasar, a powerful source of energy believed to mark the location of an active giant black hole. Nothing that gets close enough to a black hole can escape its powerful gravity. However, material swirling...
  • Some parts at 20 degrees Kelvin and Other at Room Temperature and the Whole Wire still Superconducts

    11/27/2009 2:45:38 PM PST · by decimon · 28 replies · 949+ views
    Next Big Future ^ | November 26, 2009 | Brian Wang
    > For this to work, the wire's surface must be extremely clean, allowing electrons to move freely and spread along the wire to create a uniform temperature. A material with a critical temperature of -193 °C could superconduct at room temperature, provided some sections were kept to -253 °C, they found. In principle, the colder these refrigeration points are, the fewer you need, Dubi says. >
  • UPDATE: Restarted LHC Sees First Collisions

    11/25/2009 9:43:46 PM PST · by SunkenCiv · 13 replies · 689+ views
    National Geographic News ^ | November 23, 2009 | Ker Than
    An engineer peers at damaged magnets inside the Large Hadron Collider on December 11, 2008 -- almost a month after an electrical glitch stopped the first attempt at sending a beam of protons around the world's largest particle accelerator. After more than a year of repairs, physicists now have both beams of protons stable and circulating though the collider's main ring, LHC managers announced on November 23, 2009. Photograph courtesy Maximilien Brice, CERN
  • Splitting Time from Space—New Quantum Theory Topples [sic] Einstein's Spacetime

    11/25/2009 12:25:53 AM PST · by Daffynition · 69 replies · 15,041+ views
    ScientificAmerican ^ | Dec 2009 | Zeeya Merali
    Was Newton right and Einstein wrong? It seems that unzipping the fabric of spacetime and harking back to 19th-century notions of time could lead to a theory of quantum gravity. Physicists have struggled to marry quantum mechanics with gravity for decades. In contrast, the other forces of nature have obediently fallen into line. For instance, the electromagnetic force can be described quantum-mechanically by the motion of photons. Try and work out the gravitational force between two objects in terms of a quantum graviton, however, and you quickly run into trouble—the answer to every calculation is infinity. But now Petr Hořava,...
  • First programmable quantum computer created

    11/25/2009 12:46:51 AM PST · by neverdem · 19 replies · 916+ views
    Science News ^ | November 23rd, 2009 | Laura Sanders
    Ultracold beryllium ions tackle 160 randomly chosen programs Using a few ultracold ions, intense lasers and some electrodes, researchers have built the first programmable quantum computer. The new system, described in a paper to be published in Nature Physics, flexed its versatility by performing 160 randomly chosen processing routines. Earlier versions of quantum computers have been largely restricted to a narrow window of specific tasks. To be more generally useful, a quantum computer should be programmable, in the same way that a classical computer must be able to run many different programs on a single piece of machinery. The new...
  • 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 · 17 replies · 702+ 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 · 23 replies · 996+ 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 · 427+ 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 · 1,060+ 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 · 388+ 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 · 1,081+ 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...