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Source: http://video.today.msnbc.msn.com/today/50927796/
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Acer's low-end Iconia B1-A71 Android tablet made its debut at CES 2013, packing a dual-core 1.2GHz Mediatek processor and 8GB of internal storage. A few months later here at MWC, the company is introducing a 16GB model of the 7-inch Jelly Bean slate, and it's on sale immediately for €139 (compared to €119 for the 8GB version). The higher storage capacity is the real story here; otherwise, you're looking at the same 1,024 x 600 display, 0.3-megapixel camera and lightweight plastic build. Like the version announced at CES, the B1 is available in Africa, Europe and the Middle East but not North America. Cruise past the break for the press release.
Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/JaswcDtzdfA/
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Cruz, whose aggressive approach has made him the target of mainstream news outlets which ignore similar tactics by liberals, is now Cher's favorite outlet for her social media vitriol.
Got to go!The other day when I was RANTING AGAINST IDIOT,BIGOT, CREATURE FROM THE NETHER REGIONS,Ted Cruz i made up cool line ( i think)...
Stand & Be Counted..OR..Sit & Be NOTHING ! Rage against the Machine! Dont b Apathetic ! Find out,& fight 4 your rights & rights of others
Cher earlier said the "smell of sulphur" followed Cruz around, and that he was the "scum" of the GOP via her Twitter page.
Source: http://feedproxy.google.com/~r/BreitbartFeed/~3/e7vIj_Bjqng/cher-ted-cruz-bigot
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Voracious absences at the center of galaxies, black holes shape the growth and death of the stars around them through their powerful gravitational pull and explosive ejections of energy.
"Over its lifetime, a black hole can release more energy than all the stars in a galaxy combined," said Roger Blandford, director of the Kavli Institute for Particle Astrophysics and Cosmology and a member of the U.S. National Academy of Science. "Black holes have a major impact on the formation of galaxies and the environmental growth and evolution of those galaxies."
Gravitational forces grow so strong close to a black hole that even light cannot escape from within, hence the difficulty in observing them directly. Scientists infer facts about black holes by their influence on the astronomical objects around them: the orbit of stars and clumps of detectable energy.
With this information in hand, scientists create computer models to understand the data and to make predictions about the physics of distant regions of space. However, models are only as good as their assumptions.
"All tests of general relativity in the weak gravity field limit, like in our solar system, fall directly along the lines of what Einstein predicted," explained Jonathan McKinney, an assistant professor of physics at the University of Maryland at College Park. "But there is another regime?which has yet to be tested, and which is the hardest to test?that represents the strong gravitational field limit. And according to Einstein, gravity is strongest near black holes."
This makes black holes the ultimate experimental testing grounds for Einstein's theory of general relativity.
While black holes cannot be observed, they are typically accompanied by other objects with distinctive features that can be seen, including accretion disks, which are circling disks of superhot matter on our side of the black hole's "event horizon"; and relativistic jets, high-powered streams of ionized gases that shoot hundreds of thousands of light years across the sky.
In a paper published in Science in January 2013, McKinney, Tchekhovskoy and Blandford predicted the formation of accretion disks and relativistic jets that warp and bend more than previously thought, shaped both by the extreme gravity of the black hole and by powerful magnetic forces generated by its spin. Their highly detailed models of the black hole environment contribute new knowledge to the field.
For decades, a simplistic view of the accretion disks and polar jets reigned. It was widely believed that accretion disks sat like flat plates along the outer edges of black holes and that jets shot straight out perpendicularly. However, new 3D simulations performed on the powerful supercomputers of the National Science Foundation's Extreme Science and Engineering Discovery Environment (XSEDE) and NASA overturned this oversimplified view of jets and disks.
The simulations show that the jet is aligned with the black hole's spin near the black hole but that it gradually gets pushed by the disk material and becomes parallel to (but offset from) the disk's rotational axis at large distances. The interaction between the jet and disk leaves a warp in the accretion disk density.
"An important aspect that determines jet properties is the strength of the magnetic field threading the black hole," said Alexander Tchekhovskoy, a post-doctoral fellow at the Princeton Center for Theoretical Science. "While in previous works it was a free parameter, in our series of works the field is maximum: it is as strong as a black hole's gravity pull on the disk."
In the simulations, the twisting energy grows so strong that it actually powers the jet. In fact, the jet can reorient the accretion disk, rather than the other way around, as was thought previously.
"People had thought that the disk was the dominant aspect," McKinney said. "It was the dog and the jet was the wagging tail. But we found that the magnetic field builds up to become stronger than gravity, and then the jet becomes the dog and the disk becomes the wagging tail. Or, one can say the dog is chasing its own tail, because the disk and jet are quite balanced, with the disk following the jet ? it's the inverse situation to what people thought."
What does this have to do with Einstein and his theory of general relativity?
Astronomers are closer than ever to being able to see the details of the jets and accretion disks around black holes. In a September 2012 paper in Science, Sheperd Doeleman of MIT reported the first images of the jet-launching structure near the supermassive black hole, M87, at the center of a neighboring galaxy, captured using the Event Horizon Telescope, a very long baseline interferometry (VLBI) array composed of four telescopes at three geographical locations. It constituted a small sliver of a vast skyscape, yet the results give astronomers like McKinney, Tchekhovskoy and Blandford the hope that they will get their first comprehensive glimpse into the black hole's neighborhood in the next three to five years.
"We'll see the gases swirl around the black hole and other optical effects that will be signatures of a black holes in spacetime that one can look out for," said Blandford.
The observations will either match models like theirs, or they will be different. Both outcomes will tell researchers a lot.
"If you don't have an accurate model and anything can happen as far as you understand, then you're not going to be able to make any constraints and prove one way or another whether Einstein was right," McKinney explained. "But if you have an accurate model using Einstein's equations, and you observe a black hole that is very different from what you expected, then you can begin to say that he may be wrong."
The model Blandford and others generated using supercomputing simulations will help serve that comparative role. But they need to add one crucial element to make the simulations meaningful: a way of translating the physics of the black hole system into a visual signal as it would be seen from the vantage point of our telescopes, billions of light years away.
"We're in the process of making our simulations shine, so they can be compared with observations," McKinney said, "not only to test our ideas of how these disks and jets work, but ultimately to test general relativity."
###
University of Texas at Austin, Texas Advanced Computing Center: http://www.tacc.utexas.edu/
Thanks to University of Texas at Austin, Texas Advanced Computing Center for this article.
This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.
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Source: http://www.labspaces.net/126973/Journey_to_the_limits_of_spacetime
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by Ferrise
All Done :)
11:01 pm Jan 31st
Help needed re question and answer format.
3:13 am Jan 31st
installing the drivers.
7:07 pm Jan 28th
for mum, how to install drivers
5:33 pm Jan 28th
Update on SPSSC Progress as at Friday 25th Jan (3 weeks gone)
11:47 pm Jan 25th
All screencasts by Ferrise
Source: http://www.screenr.com/u4c7
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(Reuters) - Nevada Governor Brian Sandoval has signed legislation legalizing online gambling, after quick approval of the bill by state lawmakers, in a move that comes as New Jersey weighs a similar measure.
"This bill is critical to our state's economy, and ensures that we will continue to be the gold standard for gaming regulation," Sandoval said in a statement after signing the bill on Thursday.
The bill removes the provision requiring federal legislation or Department of Justice approval before online gaming licenses are made active, the statement said.
It comes as New Jersey - another major gambling hub - considers a similar move to legalize online gambling. Governor Chris Christie rejected a measure earlier this month that would have allowed Internet gambling, but has said he would consider approving such a law if it was framed properly.
The law requires the Nevada Gaming Commission to adopt regulations authorizing the governor to enter into agreements with other states to conduct interactive gambling.
The signing came after a joint Judiciary committee hearing on Thursday morning and approval by the legislature in the afternoon, the statement said.
(Reporting by Ian Simpson; Editing by Paul Thomasch and Phil Berlowitz)
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BEIRUT (AP) ? Syrian warplanes and artillery hit targets near Damascus International Airport on Friday following a particularly bloody day of attacks in the capital that killed dozens and struck deep into the heart of the city.
There were no immediate reports of casualties from Friday's shelling, which targeted the towns of Beit Sahm and Shebaa near the main airport road south of the capital, activists said.
The Britain-based Syrian Observatory for Human Rights and the Local Coordination Committees also reported clashes in the rebel strongholds of Daraya and Moadamiyeh, southwest of Damascus.
Recent rebel advances in the Damascus suburbs, combined with the bombings and three straight days of mortar attacks, mark the most sustained challenge of the civil war for control of Assad's seat of power.
Syrian state media said the car bombing on Thursday in the heart of Damascus ? near the ruling Baath Party headquarters and the Russian Embassy ? was a suicide attack that killed 53 civilians and wounded more than 200, including children. Anti-regime activists put the death toll at 61, which would make it the deadliest Damascus bombing of the revolt. The different tolls could not be reconciled because the regime restricts independent media access.
The main opposition group, the Syrian National Coalition, condemned the attack without accusing any specific group of carrying it out. It did, however, suggest that the regime allowed foreign terror groups to operate in Syria.
"The terrorist Assad regime bears the most responsibility for all the crimes that happen in the homeland because it has opened the doors to those with different agendas to enter Syria and harm its stability so it can hide behind this and use it as an excuse to justify its crimes," the group said in a statement.
There was no immediate claim of responsibility for the attack, but suspicion will likely fall upon one of the most extreme of Syria's myriad rebel factions, the al-Qaida-linked Jabhat al-Nusra. The group, which the U.S. has designated as a terrorist organization, has claimed similar past bombings against regime targets.
On Friday, the Coalition said it would welcome U.S. and Russian mediation to negotiate a peace deal to end the country's civil wall but insisted it would not allow Assad or members of his security services to participate in the talks.
The announced came in a statement posted on the Coalition's Facebook page following two-day meetings in Cairo meant to try to firm up its position on whether to engage with the regime in talks.
"Bashar Assad and the security and military leadership responsible for the state of Syria today must step down and be considered outside this political process," the statement said. "They cannot be part of any political solution for Syria and must be held accountable for their crimes."
SNC chief Mouaz al-Khatib has angered some of his colleagues by offering talks with regime elements to help end the civil war. Friday's announcement appeared meant to set the boundaries for any future talks by stressing that Assad and his aides cannot be part of any negotiations.
The violence in Damascus follows a string of tactical victories in recent weeks for the rebels ? the capture of the nation's largest hydroelectric dam and the overtaking of airbases in the northeast ? that have contributed to the sense that the opposition may be gaining momentum.
But Damascus is the ultimate prize in the civil war, and many view the battle for the ancient city as the most probable endgame of a conflict which has killed nearly 70,000 people, according to U.N. estimates.
The latest violence in the capital has shattered the sense of normalcy that the Syrian regime has desperately tried to maintain in Damascus, a city that has largely been insulated from the bloodshed and destruction that has left other urban centers in ruins.
The rebels first launched an offensive on Damascus in July, following a stunning bombing on a high-level government crisis meeting that killed four top regime officials, including Assad's brother-in-law and the defense minister. After that attack, rebel groups that had established footholds in the suburbs pushed in, battling government forces for more than a week before being routed and swept out.
Since then, government warplanes have pounded opposition strongholds on Damascus' outskirts, and rebels have managed only small incursions on the city's southern and eastern sides.
Also Friday, New York-based Human Rights Watch urged the U.N. to require Syrian authorities to grant international monitors access to its detention facilities, following the death of a peace activist in custody.
Omar Aziz, 64, died on Feb. 16 of health complications at a military hospital, the group said in a statement. It went on to describe how a newly released detainee also reported witnessing the death of Ayham Ghazzoul, an imprisoned 26-year-old rights activist. Both had been detained by security forces in November.
"Aziz's death, and Ghazzoul's feared death are yet another reminder of the need to immediately lift the veil of secrecy over Syria's prisons," said Sarah Leah Whitson, HRW's Middle East director. "How many more deaths in custody before the Security Council requires Syria to open up its detention centers?"
Human rights groups and the opposition accuse Syrian authorities of holding tens of thousands of prisoners, many of whom it is feared have been being tortured.
Source: http://news.yahoo.com/activists-report-shelling-near-damascus-airport-102759672.html
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A Closer Look at the New Sony PS4 Controller | Hypebeast
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