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Photovoltaic Cells

Photovoltaic Cells. By. Tyler Costello & Kyle Yurkewitz. How does it work?. http://science.nasa.gov/headlines/y2002/solarcells.htm. Photovoltaic cells use sunlight to knock electrons off to create an electric current. They produce a Direct current flow of electricity.

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Photovoltaic Cells

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  1. Photovoltaic Cells By. Tyler Costello & Kyle Yurkewitz

  2. How does it work? http://science.nasa.gov/headlines/y2002/solarcells.htm Photovoltaic cells use sunlight to knock electrons off to create an electric current. They produce a Direct current flow of electricity

  3. Photovoltaic cells being used on an airplane prototype http://cache.gizmodo.com/assets/resources/2007/05/solarimpulse.jpg

  4. How efficient are they? As you can see by the chart since the 1980s the price of energy has gone down and with the instillation of PV cells it would continue to decrease. By 2020 the cost of energy per kilowatt would be down to a mere 10 cents http://www1.eere.energy.gov/tribalenergy/guide/images/chart3_solar_pv.gif

  5. PV cells being used as a cars source of fuel http://cache.gizmodo.com/assets/resources/2006/10/venturi_astrolab.jpg

  6. The next big thing? Photovoltaic cells, unlike and fossil fuel energy emits no harmful byproducts. The only problem is there location, if they are located where photosynthesizing plants they would just be a replacement to one renewable resource (biomass), but if there located on fences, roofs or other places where plants are not found then they would just be another renewable energy resource

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