Archive for the 'power' Category...
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The wilderness is encroaching over abandoned towns in the Chernobyl exclusion zone. One of the elderly residents who refused to evacuate the contaminated area says packs of wolves have eaten two of her dogs, and wild boar trample through her cornfield. Scientist are divided as to whether or not the animals are flourishing in the highly radioactive environment: “Robert J. Baker of Texas Tech University says the mice and other rodents he has studied at Chernobyl since the early 1990s have shown remarkable tolerance for elevated radiation levels. But Timothy Mousseau of the University of South Carolina, a biologist who studies barn swallows at Chernobyl, says that while wild animals have settled in the area, they have struggled to build new populations.”
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Original post by ozmanjusri (posted by kdawson) and software by Elliott Back
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kcurtis writes “According to the Boston Globe, MIT Researchers have powered a light bulb remotely. The successful experiment lit a 60-watt light bulb from a power source two meters away, with no physical connection between the power source and the light bulb. Details about WiTricity, or wireless electricity, are scheduled to be reported today in Science Express, the advance online publication of the journal Science, the Massachusetts Institute of Technology said. ‘The team from MIT is not the first group to suggest wireless energy transfer. Nineteenth-century physicist and engineer Nikola Tesla experimented with long-range wireless energy transfer, but his most ambitious attempt – the 29m high aerial known as Wardenclyffe Tower, in New York – failed when he ran out of money. Others have worked on highly directional mechanisms of energy transfer such as lasers. However, unlike the MIT work, these require an uninterrupted line of sight, and are therefore [...]
Original post by Zonk and software by Elliott Back
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WrongSizeGlass writes “Science Daily is reporting on work by physicists at the University of Utah who have developed small devices that turn heat into sound and then into electricity. ‘We are converting waste heat to electricity in an efficient, simple way by using sound […] It is a new source of renewable energy from waste heat.’ They report that technology holds promise for changing waste heat into electricity, harnessing solar energy and cooling computers and radars.”
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Original post by ScuttleMonkey and software by Elliott Back
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Hank Green writes “A new kind of Solid Oxide Fuel Cell has been developed that can consume any kind of fuel, from hydrogen to bio-diesel; it is over two times more efficient than traditional generators. Acumentrics is attempting to market the technology to off-grid applications (like National Parks) and also for home use as personal Combined Heat and Power plants that are extremely efficient (half as carbon-intensive as grid power.)”
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Original post by kdawson and software by Elliott Back
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gtada writes “A story published at Physorg.com discusses recently published research into the fabrication of solar cells that surpass the 40% efficiency milestone. Such devices would be the high water-mark to date, and hint at the possibility of even more effective technology. ‘In the design, multijunction cells divide the broad solar spectrum into three smaller sections by using three subcell band gaps. Each of the subcells can capture a different wavelength range of light, enabling each subcell to efficiently convert that light into electricity. With their conversion efficiency measured at 40.7%, the metamorphic multijunction concentrator cells surpass the theoretical limit of 37% of single-junction cells at 1000 suns, due to their multijunction structure.’”
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Original post by Zonk and software by Elliott Back
