Physics

The first LHC protons run ends with new milestone

(Phys.org)—This morning CERN completed the first LHC proton run. The remarkable first three-year run of the world's most powerful particle accelerator was crowned by a new performance milestone. The space between proton bunches in the beams was halved to further increase beam intensity.

Electron spin transport demonstrated for first time in an organic device

(Phys.org)—Researchers in the Semiconductor and Dimensional Metrology Division's Nanoelectronic Device Metrology (NEDM) Project have demonstrated the first documented case of electron spin transport in an organic device.

Adhesion disturbed by noise

Imagine a solid ball rolling down a slightly inclined ramp. What could be perceived as child's play is the focus of serious theoretical research by Manoj Chaudhury and Partho Goohpattader, two physicists from Lehigh University, Bethlehem, Pensylvania, USA. Their study, which is about to be published in European Physical Journal E, has one thing in common with childhood behaviour. It introduces a mischievous idea, namely studying the effect of random noise, such as vibrations, on the ball. They found it could lower the energy barrier to set the ball in motion.

CERN: First Large Hadron Collider (LHC) protons run ends with new milestone

CERN has completed the first Large Hadron Collider (LHC) proton run. The remarkable first three-year run of the world’s most powerful particle accelerator was crowned by a new performance milestone. The space between proton bunches in the beams was halved to further increase beam intensity.

Plutonium at 150 years

Planning the future needs of the U.S. nuclear weapons stockpile as well as the nuclear weapons complex depends in part on maintaining confidence in the long-term stability of the pit, or core, of plutonium-239 residing inside every weapon. Scientists and engineers who ensure the safety and reliability of the nation's stockpile had long been concerned that the damage accumulated over decades as plutonium-239 self-irradiates could eventually compromise weapon performance.

14. Alien Planet Found Around Nearest Star

Astronomers identified more than 100 more worlds around other stars in 2012, but one especially hit home—because it is right next door. Scientists have spent more than a decade probing for planets around Alpha Centauri, a trio of stars just 4.4 light-years away. In October, Xavier Dumusque at the Observatory of Geneva and colleagues described a slight wobble in Alpha Centauri B, caused by the tug of an Earth-mass planet orbiting every three days around that yellowish, sunlike star.
Althou

NASA Awards Test And Operations Support Contract

NASA has awarded its Test and Operations Support Contract, or TOSC, to Jacobs Technology Inc. of Tullahoma, Tenn.

NASA's Grail Lunar Impact Site Named for Astronaut Sally Ride

NASA has named the site where twin agency spacecraft impacted the moon Monday in honor of the late astronaut, Sally K. Ride, who was America's first woman in space and a member of the probes' mission team.

Do-it-yourself viruses: How viruses self assemble

A new model of the how the protein coat (capsid) of viruses assembles, published in BioMed Central's open access journal BMC Biophysics, shows that the construction of intermediate structures prior to final capsid production (hierarchical assembly) can be more efficient than constructing the capsid protein by protein (direct assembly). The capsid enveloping a virus is essential for protection and propagation of the viral genome. Many viruses have evolved a self-assembly method which is so successful that the viral capsid can self assemble even when removed from its host cell.

Physicists make strides in understanding quantum entanglement

While some theoretical physicists make predictions about astrophysics and the behavior of stars and galaxies, others work in the realm of the very small, which includes quantum physics. Recently, theoretical physicists have made important strides in studying a concept in quantum physics called quantum entanglement, in which electron spins are entangled with each other.

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