alb9095076

Swan experimental carbon pencil lamp 1878-9 - two early commercial types of lamp c.1880 - Made by the English chemist, Joseph Swan (1827-1914). This lamp is an early carbon and rod filament incandescent electric lamp. ©TopFoto.

Swan experimental carbon pencil lamp 1878-9 - two early commercial types of lamp c.1880 - Made by the English chemist, Joseph Swan (1827-1914). This lamp is an early carbon and rod filament incandescent electric lamp. ©TopFoto.
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Caption: Swan experimental carbon pencil lamp 1878-9 - two early commercial types of lamp c.1880 - Made by the English chemist, Joseph Swan (1827-1914). This lamp is an early carbon and rod filament incandescent electric lamp. ©TopFoto
Credit: Album / TopFoto
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Image size: 5315 × 4287 px | 65.2 MB
Print size: 45.0 × 36.3 cm | 2092.5 × 1687.8 in (300 dpi)