Physics

Violations of energy conservation in the early universe may explain dark energy

(Phys.org)—Physicists have proposed that violations of energy conservation in the early universe, as predicted by certain modified theories of quantum mechanics and quantum gravity, may explain the cosmological constant problem, which is sometimes referred to as "the worst theoretical prediction in the history of physics."

NASA Opens Media Accreditation for Next SpaceX Space Station Cargo Launch

Media accreditation now is open for launch of the next SpaceX commercial cargo resupply services mission to the International Space Station, currently targeted for no earlier than February.

Theorists propose new class of topological metals with exotic electronic properties

Researchers at Princeton, Yale, and the University of Zurich have proposed a theory-based approach to characterize a class of metals that possess exotic electronic properties that could help scientists find other, similarly-endowed materials.

Meeting the challenges of nanotechnology: Nanoscale catalytic effects for nanotechnology

Scientists show nanoscale modifications to the edge region of nanocontacts to nanowires can be used to engineer the electrical function of the interfaces.

Magnetic moment of a single antiproton determined with greatest precision ever

Physicists have published the most accurate measurement of a fundamental property of the antiproton to date. This research represents a contribution to the matter-antimatter debate.

Police horses contribute to research in physics

Recently, fifteen police horses in Gothenburg have contributed to science. They have supported the development of a new method to detect damages in the hooves by using thermoelectric sensors. In the future, hopefully, this technique can be an attractive alternative to other diagnostic tools, for example X-rays.

Graphene's sleeping superconductivity awakens

The intrinsic ability of graphene to superconduct (or carry an electrical current with no resistance) has been activated for the first time. This further widens the potential of graphene as a material that could be used in fields such as energy storage, high-speed computing, and molecular electronics.

Magnetic recording with light and no heat on garnet

A strong, short light pulse can record data on a magnetic layer of yttrium iron garnet doped with Co-ions. This was discovered by researchers from Radboud University in the Netherlands and Bialystok University in Poland. The novel mechanism outperforms existing alternatives, allowing the fastest read-write magnetic recording accompanied by unprecedentedly low heat load. The research was reported in Nature on January 18 2017.

NASA Hosts News Conference, Interviews with Next Space Station Crew

NASA astronaut Randy Bresnik, Paolo Nespoli of ESA (European Space Agency), and Sergey Ryazanskiy of the Russian space agency Roscosmos, who are scheduled to launch to the International Space Station in late spring, will participate in a news conference at 2 p.m. EST Wednesday, Jan. 25, at the agency’s Johnson Space Center in Houston.

Magnetic recording with light and no heat

A strong short light pulse can record data on a magnetic layer of yttrium iron garnet doped with Co-ions. The novel mechanism outperforms existing alternatives allowing ever fastest write-read magnetic recording accompanied by unprecedentedly low heat load, researchers report.

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