The Light bulb By: Allyson Carter. Changed society, history, and everyday life. replaced fire –torches, candles, and oil and gas lamps The light bulb. - ppt download
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Who really invented the light bulb -- according to experts
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Who really invented the light bulb? | BBC Science Focus Magazine
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De La Rue's Bulb - YouTube
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Warren De la Rue | British scientist and inventor | Britannica
Warren De La Rue - The Light Bulb
Who invented the light bulb? | Bricsys Blog
the electric arc timeline | Timetoast timelines
Network of Incubators and Innovators in Nigeria - NINE - Historical Innovations: The Electric light bulb. . Thanks to inventors Humphry Davy, Warren de la Rue, Joseph Wilson Swan and Thomas Alva
Who Invented the Light Bulb? It Wasn't Just Edison | HowStuffWorks
