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Sharing a quantum key via the possibility of communication Ars Technica Share     A new paper in Physical Review Letters shows that it is possible to create a separate key by using the mere possibility that the sender could have directed a photon to a receiving station. Read the APS journal article here. More
"Quantum trampoline" measures gravity Physics World Share
Physicists in France have come up with a new way of using bouncing ultracold atoms to measure the acceleration due to gravity. The technique involves firing vertical laser pulses at a collection of free-falling atoms, which bounces some atoms higher than others. When the atoms recombine at the center of the experiment, they create an interference pattern that reveals that g is 9.809 m/s2 – just as expected for their Paris lab. More Mini radiation detector to be used to find nukes ABC Local 7 Share
When NASA's Messenger satellite made a flyby of the planet Mercury a few weeks ago, it used the smallest, most accurate radiation detector ever developed. That same technology will now be put to use on Earth to find smuggled nuclear material. More Dark matter discovered? Don't bet on it ScienceNOW Share
Rumors are swirling around the blogosphere that a team of physicists may have finally detected particles of dark matter, the mysterious stuff whose gravity appears to hold galaxies together. If those rumors are true, the discovery would surely be one of the most important of all time. More
Higgs in space: Orbiting telescope could beat the LHC NewScientist Share
Evidence for the Higgs boson could be pouring down upon us from deep space. If so, an orbiting space telescope could upstage the Large Hadron Collider in the search for the elusive particle. More Solar cell grabs hot electrons Physics World Share
Physicists in the U.S. say that they have taken an important step forward in the race to build solar cells that are both cheap and highly efficient. They have managed for the first time to tap some of the excess energy of high-frequency photons impinging on a thin film of silicon and say that this breakthrough could lead to a new kind of efficient cell within the next three years. More Subsurface gas deposit could deflate theory of how earth's atmosphere formed Scientific American Share
A precision analysis of gases from Earth's mantle collected at a geologic formation in the U.S. Southwest points to a source for the gas that more closely resembles carbonaceous meteorites than it does the sun. If confirmed by further research, the new study would challenge a theoretical model for atmosphere formation in which Earth began with two reservoirs of solar gas captured during the planet's formation and youth – one surrounding the planet, the other buried beneath the surface. More NASA launches infrared telescope to scan entire sky CNN Share
NASA launched a new telescope into space to scan the cosmos for undiscovered objects, including asteroids and comets that might threaten Earth. The Wide-field Infrared Survey Explorer, or WISE, spacecraft will employ an infrared camera to detect light- and heat-emitting objects that other orbiting telescopes, such as the Hubble, might miss. More Plastic bags recycled into nanotubes NewScientist Share
Waste plastic from "throwaway" carrier bags can be readily converted into carbon nanotubes. The chemist who developed the technique has even used the nanotubes to make lithium-ion batteries. This is called "upcycling" – converting a waste product into something more valuable. More |
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