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Physics / Physics news 1234

Researchers team up to probe iron-arsenic superconductors with new instrument

October 10, 2008 | User rating: 4.7 / 5 after 7 vote(s) | User comments: 1

Researchers at the U.S. Department of Energy's Ames Laboratory are part of collaborative team that's used a brand new instrument at the DOE's Spallation Neutron Source to probe iron-arsenic compounds, the "hottest" new find ...


New spintronics effect could lead to magnetic batteries

October 10, 2008 | User rating: 4.6 / 5 after 74 vote(s) | User comments: 9

(PhysOrg.com) -- Physicists have recently discovered that heating one side of a magnetized nickel-iron rod causes electrons to rearrange themselves according to their spins. This so-called "spin Seebeck effect" ...


Ripple effect: Water snails offer new propulsion possibilities

October 09, 2008 | User rating: 4.4 / 5 after 12 vote(s) | User comments: 3

(PhysOrg.com) -- A UC San Diego engineer has revealed a new mode of propulsion based on how water snails create ripples of slime to crawl upside down beneath the surface.


Spallation Neutron Source sends first neutrons to 'Big Bang' beam line

October 09, 2008 | User rating: 4.5 / 5 after 15 vote(s) | No comments yet

New analytical tools coming on line at the Spallation Neutron Source, the Department of Energy's state-of-the-art neutron science facility at Oak Ridge National Laboratory, include a beam line dedicated to ...


Cosmic strings might emit cosmic sparks, answer cosmological questions

October 09, 2008 | User rating: 4.2 / 5 after 50 vote(s) | User comments: 18

(PhysOrg.com) -- For astronomers, understanding what happened in the early moments of the universe could answer many questions in physics and astronomy. One possible player in the early universe is cosmic strings, which arise ...


Scientists create superconducting thin films

October 08, 2008 | User rating: 4.7 / 5 after 45 vote(s) | User comments: 11

(PhysOrg.com) -- One major goal on the path toward making useful superconducting devices has been engineering materials that act as superconductors at the nanoscale -- the realm of billionths of a meter. Such ...


Scientists design bomb-proof thermometer to measure the heat of explosions

October 08, 2008 | User rating: 4.2 / 5 after 5 vote(s) | No comments yet

Scientists at the UK's National Physical Laboratory (NPL) in Teddington have designed a high-speed thermometer that can measure the temperature inside explosions without being damaged in the impact.


World first for sending data using quantum cryptography

October 08, 2008 | User rating: 4.5 / 5 after 52 vote(s) | User comments: 8

(PhysOrg.com) -- For the first time the transmission of data secured by quantum cryptography is demonstrated within a commercial telecommunications network. 41 partners from 12 European countries, including ...


Long-Lasting Quantum Memory Leads to Long-Distance Quantum Communication

October 07, 2008 | User rating: 4.3 / 5 after 46 vote(s) | User comments: 6

(PhysOrg.com) -- Physicists have taken a step closer to realizing long-distance quantum communication, in which a quantum state is transferred from one location to another by becoming entangled with a traveling ...


Surface tension drives segregation within cell mixtures

October 06, 2008 | User rating: not shown ( 3 vote(s) ) | No comments yet

What does a mixture of two different kinds of cells have in common with a mixture of oil and water? The same basic force causes both mixtures to separate into two distinct regions.


Fuzziness on the road to physics' grand unification theory

October 06, 2008 | User rating: 3.5 / 5 after 61 vote(s) | User comments: 8

Leave it to hypothesized gravity to weigh down what physicists have thought for 30 years. If theoretical physicists, led by the University of Oregon's Stephen Hsu, are right, the idea that nature's forces ...


In quantum channels, zero plus zero can equal non-zero

October 06, 2008 | User rating: 4.6 / 5 after 58 vote(s) | User comments: 10

(PhysOrg.com) -- Physicists have discovered a strange characteristic of quantum communication channels. If two quantum channels each have a transmission capacity of zero, they may still have a nonzero capacity ...


Brilliantly bright light source is one step closer to reality, says scientist

October 03, 2008 | User rating: 4.6 / 5 after 16 vote(s) | No comments yet

(PhysOrg.com) -- A brilliantly bright light source that can examine the detail of atoms at a microscopic level is one step closer, thanks to the adoption of a Europe-wide convention, says a leading scientist ...


Coastlines could be protected by 'invisibility cloak'

October 02, 2008 | User rating: 4.4 / 5 after 32 vote(s) | User comments: 7

Scientists at the University of Liverpool have tested an 'invisibility cloak' that could reduce the risk of large water waves overtopping coastal defences.


Counterintuitive physics may help everyone drive home quicker

October 02, 2008 | User rating: 4.5 / 5 after 73 vote(s) | User comments: 19

If you're trying to drive to a destination as quickly as possible, you might think that knowing the traffic conditions would help you choose the quickest route for yourself. Traffic reports and new GPS technologies ...


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