One of eighty-six early incandescent lamps. Carbo

Made:
1881

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One of eighty-six early incandescent lamps. Carbon filament lamp, 1 parchmentised thread, thickened seals, wedge joint to lead-in wires, badly broken. Lead in wires in glass H patters inner stem. Clear bulb with focused on long stem, uncapped. Top pip. Swan 1881. Paper label mark 509.3 ohms

Details

Category:
Lighting
Object Number:
1923-173/72
type:
carbon filament lamp
credit:
Institution of Electronical Engineering