Thursday, March 11, 2010
Friday, March 5, 2010
Thursday, March 4, 2010
Wednesday, March 3, 2010
Solar Cell With >90% Efficiency!
Created at Caltech:
"These solar cells have, for the first time, surpassed the conventional light-trapping limit for absorbing materials," says Harry Atwater, Howard Hughes Professor, professor of applied physics and materials science, and director of Caltech's Resnick Institute, which focuses on sustainability research.
The light-trapping limit of a material refers to how much sunlight it is able to absorb. The silicon-wire arrays absorb up to 96 percent of incident sunlight at a single wavelength and 85 percent of total collectible sunlight. "We've surpassed previous optical microstructures developed to trap light," he says.
Tuesday, March 2, 2010
More Reasons to be Cheerful
Monday, March 1, 2010
Yes, Men, Cars Can Effect Your Attractiveness
It turns out that cars do have a measurable effect on the perceived attractiveness of men by women. Not the other way, however.
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