Thursday, November 8, 2012

        Solar energy is a radiant light and heat from the sun. It has been developed by humans in ancient times using a range of ever-evolving technologies. Solar energy technologies include solar heating, solar thermal electricity, solar architecture and solar photovoltaics , which can make considerable contributions to solving some of the most urgent problems the world now faces.220px-Helios in flight
          Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight. Active solar techniques use photovoltaic panels, pumps, and fans to convert sunlight into useful out
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