Engraving depicting Mangin and Leroyer's signalling
Engraving depicting Mangin and Leroyer's signalling lamp for mines. The incandescent bulb was immersed in a lantern of distilled water to minimise the chance of an explosion should the lamp break
Picture No
13914205
Media ID
48378746
Size
6721px x 3120px
(3.9MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive
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Bulb Chance Distilled Immersed Incandescent Mangin Mines Minimise Signalling
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