Engraving depicting Jablochkoff's carbon rod electric candle: two carbon rods separated by insulating substance (1876). A nine inch candle would give light for about 2 hours before burning out.

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Size: 3628px × 5780px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, arc, archival, archive, candle, carbon, century, electric, electricity, engraving, historic, historical, history, insulation, jablockhoff, light, lighting, paul, rod