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
Bildgröße
2470px x 3504px, 20,90 cm x 29,70 cm (300 dpi)
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Not specified
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Land
United States
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Fotofinder.com Bildnummer
6994238
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