Edison's filament lamp, 1879.
4 0 c m
 
34cm
actual image size: 26cm x 32cm

Edison's filament lamp, 1879.

© Science Museum / Science & Society Picture Library

Description

Made by the American inventor Thomas Alva Edison (1847-1931). Edison's lamp had a single loop of carbon which glowed when a current flowed through it. The glas bulb contained a partial vacuum; there was so little oxygen in the bulb that the filament could get very hot without catching fire. This lamp was presented to the Science Museum by Edison.
 

Image Ref.

10320638
 

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