Thursday, August 1, 2013

On General Electric and Irving Langmuir

On General Electric and Irving Langmuir: When General Electric (GE) formed in 1892, Thomas Edison had already decided to abandon the electrification business and move on to motion pictures. He spent a majority of the 1880s installing direct current (DC) electrification systems for commercial buildings like J. P. Morgan's investment firm at 23 Wall Street. But his original 1879 patent for the incandescent light bulb was expiring, so GE sought to improve (and hopefully re-patent) it. To accomplish such a feat, GE established the nation's first corporate research and development (R&D) laboratory in 1901. The primary problem with Edison's light bulb lay in its carbon filament, which produced a blackened film around the inside of the bulb when lit. As a chemist who did part of his doctoral research on light bulbs, Irving Langmuir (pictured above) understood this problem well. GE hired him in 1909 to work in their R&D lab, and thus, Langmuir began experimenting with different filament materials to make the light bulb more efficient. He settled on tungsten because it has a very high melting point, and therefore, would not produce any unwanted by-products when lit for long periods of time. With Langmuir's tinkering, GE was able to re-patent the light bulb and avoid financial ruin.

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