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The Lightbulb

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alexa snow

on 3 May 2010

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Transcript of The Lightbulb

“We now know a thousand ways not to build a light bulb.”- Thomas Alva Edison
The Invention of the Light Bulb

The invention of the electric light bulb in particular prodominantly changed human existence by illuminating the world, allowing a wide range of human activities to occure. "To invent, you need a good imagination and a pile of junk."- Thomas Edison How did the light bulb effect society?

On October 21, 1879 at 1:30 A.M. a group of tense workers gathered in the inventor Thomas Alva Edison's laboratory at Menlo Park, New Jersey. Edison was about to flip a switch that would send an electric current flowing through his latest invention- a glass vacuum globe containing a thin filament of carbon made by burning a thread of cotton. If the invention worked, it meant that he and his workers had just witnessed the illumination of the first electric light bulb. Edison touched the switch while the filament inside the glass began to glow brighter and brighter. Now filled with excitement instead of tension, the laboratory workers realized that their long hours and perseverance had paid off. The light continued to glow for thirteen hours before the glass cracked. Thomas knew how to improve that by making the glass thinner and more heat resistant. The important thing was that Thomas Alva Edison, with the help of his workers, had demonstrated a method of lighting that could eventually be installed in every home, every building, and on every city street. Introductory Safety, Durability, and Manageablility candles and oil lamps
last longer without having to be replaced
does not need extra materials to run

Factory Advantages longer work hours
no longer have to use oil lamps, candles, or sunlight
became popular which lead to electrical industry growth
increased demand for light bulbs = increase in business Travel and Communication provides quicker travel
light houses
allowed communications at all hours
Conclusion Through Thomas Alva Edison's invention of the light bulb, sources of illumination were made safer, factories benefited greatly, and transportation and communication became quicker. Works Cited Pollard, Michael. The Light Bulb and How It Changed the World. New York: Facts on File, 1995. Print.
World History. the Human Journey. Austin, Tex.: Holt, Rinehart and Winston, 2005. Print. By Alexa Snow
World History, Period 4
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