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68How to harness Sun's energy by making a solar concentrator
by greathub
A solar reflector can be made very easily. The beauty of a parabolic reflector is that you can concentrate parallel rays of sun on a praticular point. It can be used for various purposes. It has applications... published 3 months ago
65Alternative Energy
by greathub
World is going through a serious shortage of energy these days. Especially the developing countries need a lot more energy than many others. Oil has shot up to $100 per barrel. This sharp rise was already... published 4 months ago
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