ScienceDaily: Top Technology News |
- Physicists localize 3-D matter waves for first time
- Measuring elusive neutrinos flowing through the Earth, physicists learn more about the sun
- Astrophysics and extinctions: News about planet-threatening events
- Scientist searches for moons around asteroids
| Physicists localize 3-D matter waves for first time Posted: 07 Oct 2011 01:16 PM PDT Physicists have experimentally demonstrated for the first time how three-dimensional conduction is affected by the defects that plague materials. The researchers achieved complete Anderson localization of quantum matter waves in three dimensions. The team also measured the energy a particle needs to escape localization, known as the mobility edge. They found that as disorder increased, so did the mobility edge, meaning that materials with high concentrations of defects induce more localization.  |
| Measuring elusive neutrinos flowing through the Earth, physicists learn more about the sun Posted: 07 Oct 2011 08:39 AM PDT Using one of the most sensitive neutrino detectors on the planet, physicists are now measuring the flow of solar neutrinos reaching earth more precisely than ever before. The detector probes matter at the most fundamental level and provides a powerful tool for directly observing the sun's composition.  |
| Astrophysics and extinctions: News about planet-threatening events Posted: 07 Oct 2011 07:32 AM PDT Space is a violent place. If a star explodes or black holes collide anywhere in our part of the Milky Way, they'd give off colossal blasts of lethal gamma-rays, X-rays and cosmic rays and it's perfectly reasonable to expect Earth to be bathed in them. A new study of such events has yielded some new information about the potential effects of what are called "short-hard" interstellar radiation events.  |
| Scientist searches for moons around asteroids Posted: 07 Oct 2011 07:21 AM PDT Most people know that some planets have moons but would be surprised to know that some asteroids do, too. According to new research, about 20 percent of them do.  |
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