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John Lemke

ground hum in studio a/c - Gearslutz.com - 0 views

  • The $30 20 minute fix. Go to home depot and get a run of 12 gauge green wire, a pair of wire strippers and a pipe ground. Attach the pipe ground to the cold water pipe in your basement that comes from the street. Attach the wire to the pipe ground and run it into your studio. Turn off the circuit breaker and open the outlet(s) and remove the ground that is there and replace it with the wire from the basement. Turn on the circuit breaker. Done and done.
  • your best bet it to drive an actual ground rod (theyre pretty cheap) in your basement 10' deep or so ... then use the grounding techniques as above.... consider using braided wire as well, the larger surface area is better at 'grabbing' and grounding RFI
John Lemke

Hackers charged with stealing Xbox, 'Call of Duty,' and US Army secrets worth over $100... - 0 views

  • Four hackers have been jointly charged with conspiracies to commit computer fraud, copyright infringement, wire fraud, mail fraud, identity theft, and theft of trade secrets. Individually, they have been charged with counts of aggravated identity theft, unauthorized computer access, copyright infringement, and wire fraud.
  • The defendants, aged between 18 and 28, are believed to have stolen more than $100 million in intellectual property and other proprietary data from the likes of Microsoft Corporation, Epic Games, Valve, and even the US Army. This includes pre-release versions of Gears of War 3 and Call of Duty: Modern Warfare 3, Apache helicopter simulation software developed for the US army, and information about the Xbox One console. Two of the suspects have pleaded guilty, one of which is 22-year old David Pokora. His plea represents what may be the first conviction of a foreign-based individual for hacking into US businesses to steal trade secret information.
  • 18-count superseding indictment
John Lemke

Scientists May Have Decoded One of the Secrets to Superconductors | Science | WIRED - 0 views

  • “In the same way that a laser is a hell of a lot more powerful than a light bulb, room-temperature superconductivity would completely change how you transport electricity and enable new ways of using electricity,” said Louis Taillefer, a professor of physics at the University of Sherbrooke in Quebec.
  • ripples of electrons inside the superconductors that are called charge density waves. The fine-grained structure of the waves, reported in two new papers by independent groups of researchers, suggests that they may be driven by the same force as superconductivity. Davis and his colleagues directly visualized the waves in a study posted online in April, corroborating indirect evidence reported in February by a team led by Riccardo Comin, a postdoctoral fellow at the University of Toronto.
  • Taken together, the various findings are at last starting to build a comprehensive picture of the physics behind high-temperature superconductivity. “This is the first time I feel like we’re making real progress,” said Andrea Damascelli, a professor of physics at the University of British Columbia who led two recent studies on charge density waves. “A lot of different observations which have been made over decades did not make sense with each other, and now they do.”
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  • The community remained divided until 2012, when two groups using a technique called resonant X-ray scattering managed to detect charge density waves deep inside cuprates, cementing the importance of the waves. As the groups published their findings in Science and Nature Physics, two new collaborations formed, one led by Damascelli and the other by Ali Yazdani of Princeton University, with plans to characterize the waves even more thoroughly. Finishing in a dead heat, the rival groups’ independent studies appeared together in Science in January 2014. They confirmed that charge density waves are a ubiquitous phenomenon in cuprates and that they strenuously oppose superconductivity, prevailing as the temperature rises.
  • y applying Sachdev’s algorithm to a new round of data, Davis and his group mapped out the structure of the charge density waves, showing that the d-wave distribution of electrons was, indeed, their source.
  • The waves’ structure is particularly suggestive, researchers say, because superconducting pairs of electrons also have a d-wave configuration. It’s as if both arrangements of electrons were cast from the same mold. “Until a few months ago my thought was, OK, you have charge density waves, who cares? What’s the relevance to the high-temperature superconductivity?” Damascelli said. “This tells me these phenomena feed off the same interaction.”
  • In short, antiferromagnetism could generate the d-wave patterns of both superconductivity and its rival, charge density waves.
John Lemke

Spy Babe Now Wants to Design Astronaut Outfits | Danger Room | Wired.com - 0 views

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    Is your national space program fashion-forward enough? Astronauts getting a little frumpy after the Cold War? Having trouble getting that space plane off the ground? Why not lift morale and brighten up the place with some fierce new uniforms designed by planet Earth's most infamous ex-spy? Yes, Russia's famously outed sleeper agent Anna Chapman is back in yet another installment of her merciless publicity tour. This time, she's looking to help the ground crew at Khrunichev State Research and Production Space Center work it down the runway in style. Frilly epaulets for all! "Chapman told me that she intends to participate in designing clothing for the Khrunichev [Space] Center, in what capacity, designer or financially, she did not specify," the Gagarin Astronaut Training Center's top astronaut told Russian state media today.
John Lemke

'Solid' light could compute previously unsolvable problems - Princeton Engine... - 0 views

  • The researchers are not shining light through crystal – they are transforming light into crystal. As part of an effort to develop exotic materials such as room-temperature superconductors, the researchers have locked together photons, the basic element of light, so that they become fixed in place.
  • The results raise intriguing possibilities for a variety of future materials. But the researchers also intend to use the method to address questions about the fundamental study of matter, a field called condensed matter physics.
  • To build their machine, the researchers created a structure made of superconducting materials that contains 100 billion atoms engineered to act as a single "artificial atom." They placed the artificial atom close to a superconducting wire containing photons. By the rules of quantum mechanics, the photons on the wire inherit some of the properties of the artificial atom – in a sense linking them. Normally photons do not interact with each other, but in this system the researchers are able to create new behavior in which the photons begin to interact in some ways like particles. "We have used this blending together of the photons and the atom to artificially devise strong interactions among the photons," said Darius Sadri, a postdoctoral researcher and one of the authors. "These interactions then lead to completely new collective behavior for light – akin to the phases of matter, like liquids and crystals, studied in condensed matter physics."
John Lemke

Cops to Congress: We need logs of Americans' text messages | Politics and Law - CNET News - 0 views

  • CNET has learned a constellation of law enforcement groups has asked the U.S. Senate to require that wireless companies retain that information, warning that the lack of a current federal requirement "can hinder law enforcement investigations." They want an SMS retention requirement to be "considered" during congressional discussions over updating a 1986 privacy law for the cloud computing era -- a move that could complicate debate over the measure and erode support for it among civil libertarians. As the popularity of text messages has exploded in recent years, so has their use in criminal investigations and civil lawsuits. They have been introduced as evidence in armed robbery, cocaine distribution, and wire fraud prosecutions. In one 2009 case in Michigan, wireless provider SkyTel turned over the contents of 626,638 SMS messages, a figure described by a federal judge as "staggering."
John Lemke

Court: Fining Jammie Thomas $9,250 Per Song Infringed Motivates Creative Activity | Tec... - 0 views

  • This is hardly a surprise, but similar to the Joel Tenenbaum case, Jammie Thomas-Rasset (the other person sued for copyright infringement for using a file sharing system), has lost again. The appeals court (8th Circuit) has ruled that $9,250 per song infringed is perfectly reasonable and that the judge in the case, Michael Davis, erred in calling for a new trial after the initial jury verdict (the first of three). There were a number of procedural issues here, and it's worth pointing out that Thomas-Rasset herself more or less asked the court to bring back this first verdict and focus on the Constitutionality of the damages amount. So, the whole mess with the three separate district court trials sort of gets swept under the rug. However, the court simply isn't buying Thomas-Rasset's claim that the statutory damages are unconstitutionally punitive and a violation of due process. Basically, it says that the fact that statutory damages are completely out of whack with actual damages doesn't matter, because the point of statutory damages is that they're disconnected from actual damages on purpose (because, in theory, they're put in place because actual damages are difficult to assess).
John Lemke

DNA from maggot guts used to identify corpse in criminal case | Ars Technica - 0 views

  • It had already been suggested by other researchers that the gastrointestinal contents of maggots could be used to identify the subjects they feed on. However, never before has the theory been trialed in a legal, criminal case. Pathologists at Autonomous University of Nuevo León in San Nicolás, Mexico, led by María de Lourdes Chávez-Briones and Marta Ortega-Martínez, carried out short tandem repeat typing tests (a common method of DNA profiling) on the matter extracted from three dissected maggots found on the victim's face and neck, and separately on the alleged father of the missing woman. Preliminary results showed that the body was female, and the final outcome was a 99.685 percent probability of positive paternity—the victim had been identified.
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    "It had already been suggested by other researchers that the gastrointestinal contents of maggots could be used to identify the subjects they feed on. However, never before has the theory been trialed in a legal, criminal case. Pathologists at Autonomous University of Nuevo León in San Nicolás, Mexico, led by María de Lourdes Chávez-Briones and Marta Ortega-Martínez, carried out short tandem repeat typing tests (a common method of DNA profiling) on the matter extracted from three dissected maggots found on the victim's face and neck, and separately on the alleged father of the missing woman. Preliminary results showed that the body was female, and the final outcome was a 99.685 percent probability of positive paternity-the victim had been identified."
John Lemke

Elusive particle that is its own antiparticle observed -- ScienceDaily - 0 views

  • Using a two-story-tall microscope floating in an ultralow-vibration lab at Princeton's Jadwin Hall, the scientists captured a glowing image of a particle known as a "Majorana fermion" perched at the end of an atomically thin wire -- just where it had been predicted to be after decades of study and calculation dating back to the 1930s.
  • The hunt for the Majorana fermion began in the earliest days of quantum theory when physicists first realized that their equations implied the existence of "antimatter" counterparts to commonly known particles such as electrons. In 1937, Italian physicist Ettore Majorana predicted that a single, stable particle could be both matter and antimatter. Although many forms of antimatter have since been observed, the Majorana combination remained elusive.
  • Despite combining qualities usually thought to annihilate each other -- matter and antimatter -- the Majorana fermion is surprisingly stable; rather than being destructive, the conflicting properties render the particle neutral so that it interacts very weakly with its environment. This aloofness has spurred scientists to search for ways to engineer the Majorana into materials, which could provide a much more stable way of encoding quantum information, and thus a new basis for quantum computing.
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