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69How 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
56Ideas and Information for essays and reseach reports
by greathub
Sometimes it is difficult to generate ideas for writing essays and research reports. If you have hit one such writer's block then you are at the right place. Here you will find ideas as well as links to... published 3 months ago
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