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dijous, 4 d’abril del 2013

WHAT IS SOLAR ENERGY?


Solar energy is the energy obtained from the use of electromagnetic radiation from the Sun
Solar radiation reaching the Earth has been harnessed by humans since ancient times, using different technologies that have evolved over time from conception. Currently, heat and sunlight can be harnessed through sensors and photovoltaic cells and thermal collectors heliostats that can transform it into electrical or thermal energy. It is a so-called renewable energy or clean energy.


This is a video about solar energy:


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