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Edison's filament lamp,  American,  1879.
Titel Edison's filament lamp, American, 1879.
Caption Made by Thomas Alva Edison (1847-1931), this lamp has a single loop of carbon which glowed when a current flowed through it. The glass bulb (made by the glass blower, Boehm) was evacuated so that there was so little oxygen in the bulb that the filament could get white hot without burning. This lamp was made one year after Joseph Swan's pioneering electric light bulb, but both were obsolete by the time Swan and Edison joined forces in Britain in 1883 to form the Edison and Swan United Electric Light Company., 6994238
Aufnahmedatum 01.01.2009
Bildnachweis Science & Society / FOTOFINDER.COM
Bildname 10276213
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Land United States
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Fotofinder.com Bildnummer 6994238 / E4ADDF41AE24E23C