ScienceDaily: Consumer Electronics News |
- A new renewable energy source? Device captures energy from Earth's infrared emissions to outer space
- Relativity shakes a magnet: New principle for magnetic recording
- Working on thinning ice: Custom-designed radar measures Antarctic ice with millimeter accuracy
| A new renewable energy source? Device captures energy from Earth's infrared emissions to outer space Posted: 03 Mar 2014 12:40 PM PST When the sun sets on a remote desert outpost and solar panels shut down, what energy source will provide power through the night? A battery, perhaps, or an old diesel generator? Perhaps something strange and new. Scientists now envision a device that would harvest energy from Earth's infrared emissions into outer space. Heated by the sun, our planet is warm compared to the frigid vacuum beyond. Thanks to recent technological advances, the researchers say, that heat imbalance could soon be transformed into direct-current (DC) power, taking advantage of a vast and untapped energy source. |
| Relativity shakes a magnet: New principle for magnetic recording Posted: 03 Mar 2014 05:35 AM PST Scientists have predicted and discovered a new physical phenomenon that allows to manipulate the state of a magnet by electric signals. Current technologies for writing, storing, and reading information are either charge-based or spin-based. Semiconductor flash or random access memories are prime examples among the large variety of charge-based devices. They utilize the possibility offered by semiconductors to easily electrically manipulate and detect their electronic charge states representing the "zeros" and "ones". The downside is that weak perturbations such as impurities, temperature change, or radiation can lead to uncontrolled charge redistributions and, as a consequence, to data loss. Spin-based devices operate on an entirely distinct principle. |
| Working on thinning ice: Custom-designed radar measures Antarctic ice with millimeter accuracy Posted: 27 Feb 2014 06:14 AM PST A series of radars just deployed on Antarctica will give researchers their first ever day-by-day measurements of the health of one of the ice shelves that surround the frozen continent. The ice shelves around Antarctica can be up to 2 kilometres thick, but preliminary trials show the new radar system can detect changes of as little as a millimetre -- about the amount the Pine Island Glacier melts in just 30 minutes. |
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