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Light bulbs


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Light bulbs

  1. 1. LightBulbs<br />By Matt Muhs and Kc Hutmacher<br />Period 3<br />
  2. 2. When was the first light bulb invented?<br />Thomas Edison created the first light bulb in 1879.<br />BUT, Humphrey Davy created the first light in 1800.<br />
  3. 3. Who invented the first light bulb?<br />Humphrey Davy created the first light using an arc lamp.<br />The arc lamp took to much power for use in residential houses.<br />They use arc lamps in lighthouses because they are super bright. <br />Edison bought the idea of the light bulb from to inventors and patented it. <br />
  4. 4. What materials were originally used to make the light bulb?<br />Humphrey Davy connected wires to a battery and a piece of charcoal, which made an intense spark. This became known as the electric arc lamp.<br /> Thomas Edison then used a filament housed in a glass vacuum bulb. He then passed electricity through this which lit the bulb. <br />
  5. 5. How was Edison’s light bulb originally made?<br />Edison used a carbon filament that burned for forty hours.<br />The carbon filament was put in an oxygen-less glass bulb.<br />
  6. 6. What improvements to the light bulb have been made over the years?<br />1920s-1930s:Adjustable power beam bulbs, fluorescent lighting, and one time flash bulbs.<br />1940s-1950s: "Soft light" incandescent bulbs, halogen and infrared light, and the first light emitting diode (LED).<br />1960s: The increase in the efficiency and capacity of LED technology.<br />The Late 20th and Early 21st Centuries: The first full spectrum and near-full spectrum light bulbs.<br />
  7. 7. Why were such improvements made?<br />1920’s-1930’s: Most improvements were made mainly to improve photography technology<br />1940’s-1950’s: Improvements made to invent the first LED lights.<br />1960’s: Improvements to the LED light bulbs and flash lights to make them more efficient.<br />The late twentieth and early 21’st centuries: Improvements made to be more eco-friendly and better the marketing of full spectrum incandescent light bulbs.<br />
  8. 8. Who uses the product?<br />Light can be used to keep food warm using a heat lamp.<br />They can be used to incubate chickens.<br />They can also be found in lighthouses.<br />
  9. 9. Works Sited <br />Who Invented the light bulb?. (2007). Retrieved from <br />Who Invented the light bulb?. (2008). Retrieved from,r:28,s:138&tx=40&ty=76&biw=1419&bih=690&safe=active<br />
  10. 10. Irene, G. (2009, June 30). How much Coal can a cfl save?. Retrieved from Who Invented the light bulb?. (2008). Retrieved from,r:28,s:138&tx=40&ty=76&biw=1419&bih=690&safe=active<br />Crane, C. (2010). Cc vivid 120v led light bulb. Retrieved from<br />
  11. 11. Marković, D. (2010). The Second industrial revolution. Retrieved from <br />Arc lamp. (2010). Retrieved from <br />Thomas edison facts. (n.d.). Retrieved from <br />Westcott, T. (2007 , november 26). Astronomy picture of the day. Retrieved from <br />Great Idea Finder. (n.d.). Light bulb. Retrieved from <br />The Franklin Institute. (n.d.). Edisons light bulb. Retrieved from <br />
  12. 12. Lebednik, C. (2009, November 11). How has the Light bulb changed over the years?. Retrieved from <br />Enchanted Learning. (2010). The Invention of the light bulb: Davy, Swan and Edison. Retrieved from<br />Blank, C. (2009, August 13). Materials used in a light bulb. Retrieved from <br />