Solar-powered LED lighting principles and techniques of detailed analysis of
Date:2011-11-24 16:12
Status:Be resolved
Question:zhangsheng
Solar energy is most directly on the Earth the most widespread and clean source of energy, solar energy as a huge amount of renewable energy, the radiant energy reaches the Earth's surface is approximately equal to 250 million barrels a day, it can be said is inexhaustible and always available. LED almost entirely focused on the spectrum of visible light spectrum, so high luminous efficiency, most people are of the view that energy-saving lighting energy-saving four-fifths is a great initiative
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