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Physics news 1234

First vortex 'chains' observed in engineered superconductor

December 12, 2005 | User rating: 4.9 / 5 after 7 vote(s) | No comments yet

They look like tiny swirling dust devils on the surface of the superconductor: "vortices" that appear where magnetic fields interact with the material. Unlike harmless dust devils, however, vortices can sap ...


Scientists pin down causes of dust eruptions

April 18, 2006 | User rating: 4.9 / 5 after 49 vote(s) | No comments yet

By simple light and heat mechanisms, dust particles seem to defy gravity and leap up into the air. The effect, which once played a role in the formation of the Earth and asteroids, could also have applications ...


Researchers Create Improved Magnetic-Semiconductor Sandwich

October 02, 2006 | User rating: 4.9 / 5 after 28 vote(s) | No comments yet

Researchers at Ohio University have created an improved magnetic semiconductor that solves a problem spintronics scientists have been investigating for years.


Novel forms of the elements predicted by simulation

June 22, 2006 | User rating: 4.9 / 5 after 34 vote(s) | No comments yet

The Periodic Table of elements is the basis of chemistry. Yet, it is known that the behaviour of the elements – and their chemical properties – change significantly under pressure.


Z machine exceeds two billion degrees Kelvin: hotter than the interiors of stars

March 08, 2006 | User rating: 4.8 / 5 after 236 vote(s) | No comments yet

Sandia’s Z machine has produced plasmas that exceed temperatures of 2 billion degrees Kelvin — hotter than the interiors of stars. The unexpectedly hot output, if its cause were understood and harnessed, could ...


'Maiden Flight' for LHC Computing Grid Breaks Gigabyte-per-Second Barrier

February 15, 2006 | User rating: 4.8 / 5 after 13 vote(s) | No comments yet

UK physicists have successfully taken part in a challenge to test an international scientific computing Grid under working conditions. During the week-long challenge, the LHC Computing Grid sustained transfer ...


U.S. Should Bid to Host Next Particle Accelerator, Report Says

April 26, 2006 | User rating: 4.8 / 5 after 13 vote(s) | No comments yet

To remain globally competitive in particle physics, the United States should seize the opportunity to lead worldwide research efforts that would answer critical questions about the ultimate constituents of matter and the ...


Imaging Challenges Theory of High-temperature Superconductivity

August 02, 2006 | User rating: 4.8 / 5 after 26 vote(s) | No comments yet

By observing events at the scale of single atoms, Cornell researchers have found evidence that the mechanism in high-temperature superconductors may be much more like that in low-temperature superconductors ...


First STM spectroscopy of graphene flakes yields new surprises

July 21, 2008 | User rating: 4.8 / 5 after 39 vote(s) | No comments yet

(PhysOrg.com) -- Scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and the University of California at Berkeley have performed the first scanning tunneling spectroscopy of ...


Prominent U.S. Physicists Send Letter to President Bush

April 17, 2006 | User rating: 4.8 / 5 after 365 vote(s) | No comments yet

Thirteen of the nation’s most prominent physicists have written a letter to President Bush, calling U.S. plans to reportedly use nuclear weapons against Iran “gravely irresponsible” and warning that such action would have ...


Rapid-fire: Electrical circuit may bring Sandia Z to fusion sooner

April 25, 2007 | User rating: 4.8 / 5 after 96 vote(s) | No comments yet

An electrical circuit that should carry enough power to produce the long-sought goal of controlled high-yield nuclear fusion and, equally important, do it every 10 seconds, has undergone extensive preliminary ...


Optical Device Cancels Starlight So Astronomers Can See Distant Planets

February 28, 2006 | User rating: 4.8 / 5 after 51 vote(s) | No comments yet

"Some people say that I study darkness, not optics," jokes Grover Swartzlander. But it's a kind of darkness that will allow astronomers to see the light. Swartzlander, an associate professor in The University ...


New laser technique that strips hydrogen from silicon surfaces

May 18, 2006 | User rating: 4.8 / 5 after 51 vote(s) | No comments yet

A team of researchers have achieved a long-sought scientific goal: using laser light to break specific molecular bonds. The process uses laser light, instead of heat, to strip hydrogen atoms from silicon surfaces, ...


Scientists Develop Switchable Focus Eyeglass Lenses

April 04, 2006 | User rating: 4.8 / 5 after 38 vote(s) | No comments yet

Optical scientists have developed eyeglass lenses that switch focus in a blink of an eye. Optical scientists at The University of Arizona have developed new switchable, flat, liquid crystal diffractive lenses ...


IBM researchers develop new way to explore and control atom-scale magnetism

March 31, 2006 | User rating: 4.8 / 5 after 25 vote(s) | No comments yet

IBM scientists have developed a powerful new technique for exploring and controlling magnetism at its fundamental atomic level. The new method promises to be an important tool in the quest not only to understand ...


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