Solar Energy
Published on Nov 18, 2015
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Solar power cells convert sunlight into electricity, using the energy of speeding photons to create an electrical current within a solar panel. Photons are created in the center of the sun by the fusion of atom.
Photo by kevin dooley
Solar energy can be used for day lighting, cooking, heating water or other fluids, distillation, disinfection, making saline water potable.
Photo by Grevel
Solar energy has some problems. First, no matter how clear the skies, a solar panel won't produce electricity at night, so a solar energy system needs to have some method of storing energy. And if there is bad weather for an extended time, a solar energy system will provide little output, which means you need to have backup energy generation alternatives available.
Photo by joiseyshowaa
The potential environmental impacts associated with solar power — land use and habitat loss, water use, and the use of hazardous materials in manufacturing — can vary greatly depending on the technology, which includes two broad categorized : photovoltaic (PV) solar cells or concentrating solar thermal plants
Photo by spanginator
Solar energy has the potential to dramatically change the way the world gets its power. Enough solar energy falls on a 100-square-mile area of the southwestern United States to power the entire nation (See Reference 1). While solar is among the world's cleanest forms of energy, plans to develop utility scale solar farms have raised concerns about potential environmental impacts.
Photo by NASA's Marshall Space Flight Center
