Solar Wind Power
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Solar Power Kits
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Solar Power Kits
An inch-long array of some of the tiniest solar cells ever built has been successfully tested as a power source for microscopic machines, a new study reports.
…The next step, Jiang said, is to increase the voltage and then combine the tiny solar array to the chemical sensors. Jiang expects to reach the 15-volt goal by the end of the year. The results of her initial experiment are detailed in the inaugural issue of the Journal of Renewable and Sustainable Energy….
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New Spray-on Solar Cells Invented
Sunlight can cause asteroids to spin more quickly, scientists said on Wednesday, showing anew just how dynamic a place our solar system can be.
…ScienceInternational teams of scientists studying two asteroids, one about a mile wide and the other about 375 feet
wide, confirmed a previously unproven theory that sunlight can affect the rotation of asteroids because they tend to be irregularly shaped and not perfectly round.
Stephen Lowry of Queen’s University Belfast in Northern Ireland said the findings boost the understanding of the physical properties and dynamics of asteroids — hunks of metal and rock rattling around in space.
“This is important as asteroids are leftovers from the formation of the solar system, along with comets, and so by studying them we gain insights into what the solar system was like some 4.5 billion years ago,” Lowry said by e-mail.
In research appearing in the journals Nature and Science, the scientists focused on the so-called YORP effect, named for four scientists who inspired the theory.
The idea is the Sun’s heat serves as a propulsion engine on the irregular features of an asteroid’s surface. “YORP can…
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Scientists show that asteroids are solar powered
It’s the ultimate form of solar power: eat a plant, become photosynthetic. Now researchers have found how one animal does just that.
…after all, it does gain the genes from the chloroplasts that it ingested. Second, we don’t know if it can actually incorporate those genes into it’s genome anyway. It may be a plasmid (a self-replicating, double stranded segment of DNA) or an episome (a plasmid that has been integrated into the host genome). I know that this applies mainly towards bacterial and viral genetics, but then again, nobody thought that an animal could become an autotroph, so who am I to discard a good theory? Anyway, if it can integrate, then that tells us that it could, in theory, make a genetically viable gamete (It’s highly unlikely, because it would cause a Robertsonian translocation mutation or a Robertsonian fusion mutation, which in turn would create unbalanced gametes unless the the Robertsonian mutations balance out. A few gametes may be viable because of this, but that’s a bit of a stretch.). It’s significantly more probable that it cannot integrate those plasmids into its genome, strictly so that it can increase its…
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Solar-powered sea slug harnesses stolen plant genes
A solar and wind-powered electronic billboard will debut in New York’s Times Square in December, becoming the flashy intersection’s first eco-friendly ad. Forty-five solar panels and four wind turbines will power the nearly 6,000 square foot billboard, resulting in a reduction of carbon dioxide usage by 18 tons a year
…The billboard, for Ricoh Americas’ parent company Ricoh Company Ltd. of Tokyo, will measure 47 feet (14 meters) high by 126 feet (38 meters) long. Its floodlights will be powered on site by 45 solar panels and four wind turbines….
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Times Square Gets Solar-Powered Billboard
In the short term, the sector will also have to contend with a shortage of silicon, a key ingredient for solar cells that turn sunlight into electricity, and possible changes in political support as elections take place.
…FRANKFURT (Reuters) - Solar power will be a bright investment prospect as the appetite for green energy grows, even though the global credit crisis is making banks more wary of providing financing.In the short term, the sector will also have to contend with a shortage of silicon, a key ingredient for solar cells that turn sunlight into electricity, and possible changes in political support as elections take place.
“This year will be a very volatile year,” said Sven Hansen, chief investment officer at clean technology investor Good Energies, which has about 7 billion Swiss francs ($6.38 billion) under management.
“The industry will see fantastic growth, but it will be a bumpy ride in terms of how financial markets value photovoltaic companies.”
The number of new large-scale solar energy plants has been growing rapidly particularly in sun-drenched countries like Spain and Italy, but also in Germany and the United States, where regulatory conditions offer incentives and stable returns for…
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Solar power will be a bright investment prospect