Posts Tagged ‘matter’

Teenager Makes Discovery About Galaxy Distribution

January 6th, 2013 01:50 admin View Comments


Janek Kozicki writes “It has been long thought that dwarf galaxies orbiting Andromeda galaxy (M31), or any other galaxy for that matter, are distributed more or less randomly around the host galaxy. It seemed so obvious in fact that nobody took time to check this assumption. Until a 15 year old student Neil Ibata working with his father at the astronomic observatory wanted to check this out of curiosity. It turned out that dwarf galaxies tend to be placed on a plane around M31. The finding has been published in nature. Local press (especially in France) is ecstatic that a finding by a 15yr old got published in Nature. However, there’s another more important point: what other obvious things we didn’t really bother to check?”

Source: Teenager Makes Discovery About Galaxy Distribution

Fast DNA Origami Opens Way For Nanoscale Machines

December 14th, 2012 12:52 admin View Comments


ananyo writes “DNA strands can be coaxed to fold up into shapes in a matter of minutes, reveals a study published in Science (abstract). The finding could radically speed up progress in the field of DNA origami. DNA origami involves using short DNA strands to hold a longer, folded strand in place at certain points, like sticky tape. Until now, assembling the shape has involved heating the DNA and allowing it to cool slowly for up to a week. But researchers at the Technical University of Munich in Germany have worked out that for most of the cooling period, nothing happens. But when a crucial temperature is reached, the whole structure forms suddenly. The researchers now aim to design nanostructures with optimal folding temperatures close to 37 C, the temperature at which mammalian cell cultures are grown, so that DNA machines could one day be used in biological settings.”

Source: Fast DNA Origami Opens Way For Nanoscale Machines

Large Hadron Collider May Have Produced New Matter

November 27th, 2012 11:00 admin View Comments


Covalent writes “The Large Hadron Collider, the world’s largest and most powerful particle accelerator and the ‘Big Bang machine’ that was used to discover what appears to be the long-sought Higgs boson particle (as announced July 4), may have another surprise up its sleeve this year: The LHC looks to have produced a new type of matter, according to a new analysis of particle collision data by scientists at MIT and Rice University. The new type of matter, which has yet to be verified, is theorized to be one of two possible forms: Either ‘color-glass condensate’ — a flattened nucleus transformed into a ‘wall’ of gluons, which are smaller binding subatomic particles, or it could be ‘quark-gluon plasma,’ a dense, soup or liquid-like collection of individual particles.”

Source: Large Hadron Collider May Have Produced New Matter

Physicist Explains Cthulhu’s “Non-Euclidean Geometry”

October 31st, 2012 10:02 admin View Comments


An anonymous reader writes “Mathematician Benjamin K. Tippett has written a fascinating and deadpan paper (Pdf) giving insights into Cthulhu. A ‘Bubble’ of warped Space-Time makes alarmingly consistent sense of the dead God’s cyclopean city under the sea. From the paper: ‘We calculate the type of matter which would be required to generate such exotic spacetime curvature. Unfortunately, we determine that the required matter is quite unphysical, and possess a nature which is entirely alien to all of the experiences of human science. Indeed, any civilization with mastery over such matter would be able to construct warp drives, cloaking devices, and other exotic geometries required to conveniently travel through the cosmos.’”

Source: Physicist Explains Cthulhu’s “Non-Euclidean Geometry”

Physicists Propose “Perpetual Motion” Time Crystals

October 15th, 2012 10:40 admin View Comments


First time accepted submitter b30w0lf writes “It is commonly understood that crystals exist in a state of matter that is periodic in space. Meanwhile, relativistic physics tells us that we should think of time as being a physical dimension, given similar status to the other spacial dimensions. The combination of these two ideas has lead researchers at the University of Kentucky and MIT to propose special manifestations of matter which would be periodic in both space and time, dubbed ‘time crystals.’ Time crystals would continually transition between a set of physical states in a kind of perpetual motion. Note: the articles stress that this kind of perpetual motion in no way violates the established laws of thermodynamics. While time crystals remain theoretical, methods have been proposed for creating them. The most obvious application of time crystals is the creation of very precise clocks; however, other applications to time crystals have been proposed, ranging from quantum computing to helping us understand certain cosmological models.”

Source: Physicists Propose “Perpetual Motion” Time Crystals

How Cosmological Supercomputers Evolve the Universe All Over Again

October 2nd, 2012 10:03 admin View Comments


the_newsbeagle writes “To study the mysterious phenomena of dark matter and dark energy, astronomers are turning to supercomputers that can simulate the entire evolution of the universe. One such simulation, the Bolshoi projection, recently did a complete run-through. It started with the state the universe was in around 13.7 billion years ago (not long after the Big Bang) and modeled the evolution of dark matter and energy up to the present day. The run used 14,000 CPUs on NASA’s fastest supercomputer.”

Source: How Cosmological Supercomputers Evolve the Universe All Over Again

A Black Hole’s Spinning Heart of Darkness

September 29th, 2012 09:41 admin View Comments


sciencehabit writes “Like all invisible things that are only partly understood, black holes evoke a sense of mystery. Astronomers know that the tremendous gravitational pull of a black hole sucks matter in, and that the material falling in causes powerful jets of particles to shoot out of the hole at nearly the speed of light. But how exactly this phenomenon occurs remains a matter of conjecture, because astronomers have never quite managed to observe the details – until now. Astrophysicists have taken the closest look to date at the region where matter swirls around a black hole. By measuring the size of the base of a jet shooting out of the supermassive black hole at the center of the M87 galaxy (abstract), the researchers conclude that the black hole must be spinning and that the material orbiting must also be swirling in the same direction. Some of the material from this orbiting ‘accretion disk’ is also falling into the black hole, like water swirling down a drain.”

Source: A Black Hole’s Spinning Heart of Darkness

Why It Doesn’t Matter That Apple’s iPhone 5 Doesn’t Have Global LTE, Or NFC For That Matter

September 16th, 2012 09:00 admin View Comments
Categories: techcrunch Tags: , , , , , , ,

Linus Torvalds Says Linux 4.0 Could Be Out In Three Years

August 30th, 2012 08:46 admin View Comments

Operating Systems

darthcamaro writes “The wait between Linux 2.x and 3.x was a long one but the wait to Linux 4? Well that’s will only be a matter of three years according to Linus Torvalds. ‘”It’s just mentally much easier for people to remember the small number,” Torvalds said during the LinuxCon conference in San Diego [Wednesday]. “We’ll do 4.0 in three years maybe when the sub numbers have grown in the 20′s and our feeble brains can’t handle it.”‘”

Source: Linus Torvalds Says Linux 4.0 Could Be Out In Three Years

New Type of Chemical Bond Predicted To Exist In White Dwarfs

July 20th, 2012 07:55 admin View Comments


ananyo writes “A previously unknown type of powerful chemical bond should be induced by the ferocious magnetic fields of white dwarfs and neutron stars, according to computer simulations. If the effect can be harnessed in the lab, ‘magnetized matter’ could be exploited for quantum computing. Chemists identify two classes of strong molecular bonds: ionic bonds, in which electrons from one atom hop over to another, and covalent bonds, in which electrons are shared between atoms. But researchers at the University of Oslo accidentally discovered a third bonding mechanism when they simulated how atoms should behave under magnetic fields of about 105 tesla — 10,000 times the biggest fields that can be generated on Earth (abstract).”

Source: New Type of Chemical Bond Predicted To Exist In White Dwarfs