It has been nearly 120 years since Thomas Alva Edison and Joseph Wilson Swan established the Edison and Swan United Electrical Lighting Company, inventing and producing some of the worldâ€™s first carbon-filament vacuum incandescent lamps. And it was just a century ago that bare electric bulbs decorated the exterior of the Pan American Exposition in Buffalo, NY, amazing and delighting children and their parents alike. Artificial lighting affects the lives of billions of people around the ...
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