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Sources

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  • "Electric power monthly." Energy Information Administration. January 15, 2009. http://www.eia.doe.gov/cneaf/electricity/epm/epm_sum.html
  • "How solar cells work." General Electric. Accessed February 5, 2009. http://www.gepower.com/prod_serv/products/solar/en/how_solar_work.htm
  • "Solar energy -- energy from the sun." Department of Energy. Accessed February 5, 2009. http://www.eia.doe.gov/kids/energyfacts/sources/renewable/solar.html
  • "Solar tutorial." Battery Stuff. Accessed February 5, 2009. http://www.batterystuff.com/tutorial_solar.html
  • "Solar battery charger." Solar Sphere. Accessed February 5, 2009. http://www.spheralsolar.com/solarbatterycharger.html
  • "The photoelectric effect." Arizona State University. Accessed February 5, 2009. http://acept.asu.edu/PiN/rdg/photoelectric/photoelectric.shtml