Monday, March 28, 2011

BP #10

Warren De La Rue made the first known attempt to make an incandescent light bulb in 1820. He put a platinum coil in an evacuated tube and put an electric current through it. It was pretty efficient, but way too expensive to use commercially.


Throughout the 1800's many tried to make a more cost-efficient version of this light bulb. In 1879 there was finally a breakthrough. Thomas Edison and Joseph Wilson Swan created an incandescent lamp that burned for around 13 hours. Edison developed a lamp with bamboo filaments that lasted 1200 hours the next year.



The invention of tungsten started the development of the modern tungsten filament incandescent light bulb by the General Electric Company and William Coolidge in 1906. This is the light bulb we use today.




In 1930 photo flash light bulbs were introduced into photography.

General Electric created a fluorescent bulb in 1938.



The first fluorescent bulb and fixture were displayed to the public at the 1939 New York World's Fair.

In 1976 Ed Hammer invented an efficient, spiral shaped compact fluorescent light bulb. This is the bulb we see and use more and more today.



Today we see incandescent bulbs, CFL bulbs, LED lights, neon lights, and more.











Only when we think back to the days of candles and oil lamps do we realize just how far we've come. Thank goodness for revolution!


sources:
http://invsee.asu.edu/modules/lightbulb/meathist.htm

1 comment:

  1. Agreed! thank goodness for revolution!
    I definitely learned something new today because I had no idea that Thomas Edison wasn't the originator of the light bulb.
    It's funny because we never think of objects as simple as a light bulb as design... the evolution of the light bulb is not only growth of technology but it is an art form with in it self!

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