Types of lights Jack Urban
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
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
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
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
The Compact Fluorescent Bulb Most efficient light The Compact Fluorescent Bulb
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
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>.
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>.