| Fri, 03 Sep 2010 11:58:56 EST |
Magnetism's subatomic roots: Study of high-tech materials helps explain everyday phenomenon
(PhysOrg.com) -- The modern world -- with its ubiquitous electronic devices and electrical power -- can trace its lineage directly to the discovery, less than two centuries ago, of the link between electricity and magnetism. But while engineers have harnessed electromagnetic forces on a global scale, physicists still struggle to describe the dance between electrons that creates magnetic fields. |
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| Fri, 03 Sep 2010 07:17:37 EST |
Physicists find fractal boundaries in crystals
Blacksmiths make horseshoes by heating, beating and bending iron, but what's happening to the metal's individual atoms during such a process? Cornell researchers, using computational modeling, are providing new insight into how atoms in crystals rearrange as the material is bent and shaped. |
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| Thu, 02 Sep 2010 11:19:03 EST |
Scientists investigate how ice melts below freezing due to nanowire's pressure
(PhysOrg.com) -- The many ways in which water differs from other molecules is both a scientific curiosity and an important factor in shaping the Earth. Among water's unique properties are that it expands when it freezes, it boils and freezes at higher temperatures than expected for a compound with its molecular structure, and it has the ability to absorb large amounts of heat without getting hot. In a recent study, scientists have investigated another unique phenomenon of water called regelation, which occurs when frozen water - or ice - melts under high pressures, even if the temperature is below freezing. Once the pressure is lifted, the water refreezes. |
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| Thu, 02 Sep 2010 05:34:07 EST |
Delving into the world of the ultra-cold
(PhysOrg.com) -- In Swinburne University's 'cold molecules lab', where temperatures one millionth of a degree above absolute zero are routinely achieved, researchers are making significant advances in understanding the weird and wonderful world of quantum mechanics. |
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| Thu, 02 Sep 2010 04:01:28 EST |
Carlos '97 free kick no fluke, say French physicists
Roberto Carlos' free kick goal against France in 1997's Tournoi de France is thought by many to have been the most skilful free kick goal - from 35m with a powerful curling banana trajectory - ever scored; but by others to have been an incredible fluke. |
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| Wed, 01 Sep 2010 14:30:01 EST |
Glasperlenspiel: Scientists propose new test for gravity
A new experiment proposed* by physicists at the National Institute of Standards and Technology may allow researchers to test the effects of gravity with unprecedented precision at very short distances -- a scale at which exotic new details of gravity's behavior may be detectable. |
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| Wed, 01 Sep 2010 13:42:59 EST |
A model system for group behavior of nanomachines
For the casual observer it is fascinating to watch the orderly and seemingly choreographed motion of hundreds or even thousands of fish, birds or insects. However, the formation and the manifold motion patterns of such flocks raise numerous questions fundamental to the understanding of complex systems. |
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| Wed, 01 Sep 2010 12:23:53 EST |
New material may reveal inner workings of hi-temp superconductors
Measurements taken* at the National Institute of Standards and Technology may help physicists develop a clearer understanding of high-temperature superconductors, whose behavior remains in many ways mysterious decades after their discovery. A new copper-based compound exhibits properties never before seen in a superconductor and could be a step toward solving part of the mystery. |
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| Wed, 01 Sep 2010 12:10:04 EST |
NIST researchers create 'quantum cats' made of light
Researchers at the National Institute of Standards and Technology have created "quantum cats" made of photons (particles of light), boosting prospects for manipulating light in new ways to enhance precision measurements as well as computing and communications based on quantum physics. |
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