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Notizie da 5 fonti

16 apr 2014 18:00

Viewpoint: Neutrons Knock at the Cosmic Door

The quantum behavior of a neutron bouncing in the gravitational field of the Earth can improve what we know about dark energy and dark matter. Published Wed Apr 16, 2014

fisica | physics - spotlighting exceptional research

16 apr 2014 18:00

Synopsis: The Key to Thin-Film Solar-Cell Efficiency

The combination of atomic imaging and new calculations explains the large photovoltaic efficiency of thin-film cadmium-telluride solar cells. Published Wed Apr 16, 2014

fisica | physics - spotlighting exceptional research

15 apr 2014 18:00

Synopsis: Bird Flocks Shatter on Impact

Simulations show that flocks hitting a wall disintegrate like brittle solids rather than splash like fluid drops. Published Tue Apr 15, 2014

fisica | physics - spotlighting exceptional research

14 apr 2014 18:00

Viewpoint: “Snowflake Crystal” Traps Light and Sound

Experimentalists trap optical and acoustic oscillations together in a two dimensional structure that will make it easier to study their coupled behavior. Published Mon Apr 14, 2014

fisica | physics - spotlighting exceptional research

11 apr 2014 18:00

Focus: Stopping Sound with Foam

Liquid foams can completely block ultrasound transmission of some frequencies, suggesting that foams are metamaterials that could be used for acoustic insulation. Published Fri Apr 11, 2014

fisica | physics - spotlighting exceptional research

10 apr 2014 18:00

Synopsis: Radiation-Belt Scattering in the Lab

Experiments in a laboratory recreate an interaction between electrons and plasma waves that may be responsible for large electron-flux variability in the Earth’s radiation belts. Published Thu Apr 10, 2014

fisica | physics - spotlighting exceptional research

09 apr 2014 18:00

Synopsis: High-Precision Terahertz Spectroscopy

The frequency-comb technique—a high-precision visible and near infrared spectroscopy method—has been extended to terahertz frequencies, allowing the characterization of a rotational transitions in a molecular gas with unprecedented accuracy. Published Wed Apr 09, 2014

fisica | physics - spotlighting exceptional research

08 apr 2014 18:00

Synopsis: Polar Swarms

A new theory can explain the formation of swarming patterns observed in ensembles of self-propelled polar particles. Published Tue Apr 08, 2014

fisica | physics - spotlighting exceptional research

07 apr 2014 18:00

Viewpoint: Controlling a Molecule’s Fate

By selecting the intensity and duration of an ultrashort laser pulse, researchers are able to control the breakup of a molecule through the relation between its electrons and nuclei. Published Mon Apr 07, 2014

fisica | physics - spotlighting exceptional research

04 apr 2014 18:00

Focus: Thermodynamics Confronts Quantum Mechanics

Heat flow carried by electrons in a thermoelectric device requires a surprisingly wide “pipe”—a rare case where quantum effects have macroscopic consequences. Published Fri Apr 04, 2014

fisica | physics - spotlighting exceptional research