1. LightBulbs By Matt Muhs and KcHutmacher Period 3

2. When was the first light bulb invented? Thomas Edison created the first light bulb in 1879. BUT, Humphrey Davy created the first light in 1800.

3. Who invented the first light bulb? Humphrey Davy created the first light using an arc lamp. The arc lamp took to much power for use in residential houses. They use arc lamps in lighthouses because they are super bright. Edison bought the idea of the light bulb from to inventors and patented it.

4. What materials were originally used to make the light bulb? 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. Thomas Edison then used a filament housed in a glass vacuum bulb. He then passed electricity through this which lit the bulb.

5. How was Edison’s light bulb originally made? Edison used a carbon filament that burned for forty hours. The carbon filament was put in an oxygen-less glass bulb.

6. What improvements to the light bulb have been made over the years?

7. Why were such improvements made?

8. Who uses the product? Light can be used to keep food warm using a heat lamp. They can be used to incubate chickens. They can also be found in lighthouses.

9. Works Sited Who Invented the light bulb?. (2007). Retrieved from http://www.professorshouse.com/your-home/decorating-design/who-invented-light-bulb.aspx Who Invented the light bulb?. (2008). Retrieved from http://www.google.com/imgres?imgurl=http://media.readersdigest.com.au/dynamic/92/22/57/GB_light_bulbcrop.jpg&imgrefurl=http://www.readersdigest.com.au/discovery-channel-mag/who-invented-the-light-bulb/article91603.html&usg=__PdtAScjF8zCLFfrs62nQi7rwBkw=&h=352&w=520&sz=10&hl=en&start=138&zoom=1&tbnid=JTnCyMzjDIMmkM:&tbnh=126&tbnw=148&prev=/images%3Fq%3Dlight%2Bbulb%26um%3D1%26hl%3Den%26safe%3Dactive%26sa%3DN%26rls%3Dcom.microsoft:en-us%26biw%3D1419%26bih%3D690%26tbs%3Disch:10%2C2588&um=1&itbs=1&iact=rc&ei=lFCGTMGiKsienAey0p3sAQ&oei=wk-GTJ2wJJOKnAf5nMz4DQ&esq=8&page=5&ndsp=36&ved=1t:429,r:28,s:138&tx=40&ty=76&biw=1419&bih=690&safe=active

10. Works Sited Con’d Irene, G. (2009, June 30). How much Coal can a cfl save?. Retrieved from Who Invented the light bulb?. (2008). Retrieved from http://www.google.com/imgres?imgurl=http://media.readersdigest.com.au/dynamic/92/22/57/GB_light_bulbcrop.jpg&imgrefurl=http://www.readersdigest.com.au/discovery-channel-mag/who-invented-the-light-bulb/article91603.html&usg=__PdtAScjF8zCLFfrs62nQi7rwBkw=&h=352&w=520&sz=10&hl=en&start=138&zoom=1&tbnid=JTnCyMzjDIMmkM:&tbnh=126&tbnw=148&prev=/images%3Fq%3Dlight%2Bbulb%26um%3D1%26hl%3Den%26safe%3Dactive%26sa%3DN%26rls%3Dcom.microsoft:en-us%26biw%3D1419%26bih%3D690%26tbs%3Disch:10%2C2588&um=1&itbs=1&iact=rc&ei=lFCGTMGiKsienAey0p3sAQ&oei=wk-GTJ2wJJOKnAf5nMz4DQ&esq=8&page=5&ndsp=36&ved=1t:429,r:28,s:138&tx=40&ty=76&biw=1419&bih=690&safe=active Crane, C. (2010). Cc vivid 120v led light bulb. Retrieved from http://www.ccrane.com/lights/led-light-bulbs/cc-vivid-led-light-bulb.aspx