Quote:
Originally Posted by Acteon
I'm not sure why no one has done this on the cover of laptops yet...
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Because even a power miserly netbook consumes about 20 W and in perfect conditions solar cells produce maybe 50mW per square inch. 10 x 7 = 70 square inches on the cover, so that's 3.5 W of available energy. So, to get 4 hours of laptop run time, you'd need to charge it for 6 in direct sunlight and that's being very optimistic.