Mercury vacuum pump being used to evacuate (exhaust)
Mercury vacuum pump being used to evacuate (exhaust) light bulbs on commercial scale circa 1883. Pump here is Geissler's as modified by Topler and was type used by the Swan Company. From R. Wormell Electricity in the Service of Man London 1896. Engraving
Picture No
13908460
Media ID
48404180
Size
3859px x 4500px
(6.5MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive
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Bulbs Evacuate Exhaust Illumination Incandescent Mercury Modified Vacuum Wormell
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