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More Great Links

• EPA SF6 Emission Reduction Partnership for Electric Power Systems
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Sources

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• Brain, Marshall. "How Helium Balloons Work." HowStuffWorks.com. April 1, 2000. (July 16, 2008)
  http://science.howstuffworks.com/helium.htm
• Brain, Marshall. "What if someone released a large amount of helium into a small space?" HowStuffWorks.com. March 25, 2008. (Sept. 3, 2008)
  http://science.howstuffworks.com/release-helium-into-small-space.htm
• Cotton, Simon. "Sulfur hexafluoride." University of Bristol School of Chemistry. (July 16, 2008)
  http://www.chm.bris.ac.uk/motm/SF6/SF6h.htm
• "High Global Warming Potential (GWP)" U.S. Environmental Protection Agency. Oct. 19, 2006. (July 16, 2008)
  http://www.epa.gov/highgwp/scientific.html
• Larsen, Joe. "What is the physics behind the voice change which occurs when one inhales Helium?" Physics Link. 2008. (Sept. 3, 2008)
  http://www.physlink.com/Education/AskExperts/ae36.cfm
• "SF6 Emission Reduction Partnership for the Magnesium Industry." U.S. Environmental Protection Agency. March 25, 2008. (July 16, 2008)
  http://www.epa.gov/magnesium-sf6
• Shakhashiri, Bassam Z. "Floating Soap Bubbles." Science is Fun in the Lab of Shakhashiri. (July 16, 2008)
  http://scifun.chem.wisc.edu/HomeExpts/SOAPBUBL.html
• Spangler, Steve. "Anti-Helium - Sulfur Hexafluoride." Steve Spangler Science. (July 16, 2008)
  http://www.stevespanglerscience.com/experiment/from-donald-duck-to-
  barry-white-how-gases-change-your-voice
• "Sulfur Hexafluoride." Medical Dictionary. (July 16, 2008)
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• "Sulfur Hexafluoride (SF6) Gas Introduction." Liming Research Institute of Chemical Industry. 2006. (July 16, 2008)
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• "Voice with Helium and SF6." UCLA Physics: Lecture Demonstration Manual. (July 16, 2008)
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  http://science.howstuffworks.com/question254.htm