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Types of lights

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  1. Types of lights Jack Urban

  2. Fluorescent lights • Glass tube filled with Mercury • Low Pressure • Phosphorus substance inside tube • Electric current runs through: • Gets Hot • Glows • Electrons hit Mercury atoms which produce UV light • Saves Energy

  3. LED Lights • Produce light by having an electronic current pass through the material with illuminates the light • Has different colors • Popular because its very efficient

  4. Incandescent lights • Most common lights used in homes • AKA “screw-in A type light bulb” • Most inefficient light bulb • Light bulbs with thicker filaments: • Last longer • Not energy efficient

  5. Halogen lights • They are the energy-saving incandescent lights • More expensive to buy than incandescent lights • Less expensive to run than incandescent lights (Due to its efficacy) • Has color renditions • Often used in lamps

  6. Most efficient light • The Compact Fluorescent Bulb

  7. Environmental Concerns • Incandescent lights: • Use too much heat • LED lights: • Contain too much Mercury • CFL: • Most efficient • Don’t use too much heat • No mercury

  8. Works Cited • "Are Compact Fluorescent Light Bulbs Good for the Environment?." Fox News. N.p., 8 Nov. 2007. Web. 7 Mar. 2013. <http:/http://www.foxnews.com/story/ 0,2933,309220,00.html>. • 
"Energy-Efficient Lighting." eartheasy.com. N.p., n.d. Web. 7 Mar. 2013. <http:/http:// eartheasy.com/live_energyeff_lighting.htm>. • 


"Fluorescent Light Mystery Solved At Last." Cornell Center for Materials Research. N.p., 10 Dec. 1998. Web. 7 Mar. 2013. <http:/http://www.ccmr.cornell.edu/ education/ask/index.html?quid=167>.

  9. Works Cited • "Incandescent Lighting." energy.gov. N.p., n.d. Web. 7 Mar. 2013. <energy.gov/ energysaver/articles/incandescent-lighting://>. • 


"LED Lights." edisontechcenter.org. N.p., n.d. Web. 7 Mar. 2013. <http:/ edisontechcenter.org/LED.html>. • 


"The Dark Side of LED Lightbulbs." Scientific American. N.p., n.d. Web. 7 Mar. 2013. <http:/http://www.scientificamerican.com/article.cfm?id=led- lightbulb-concerns>.