Title: Electric Arc Lamp

Source : oee.nrcan.gc.ca

Year: 1878

Description:
Cross-section showing the operation of the electric arc lamp invented by pavel Jablochkoff in 1878.

Transcription:
Borosilicate glass bulb Tungsten electrode Quartz arc tube Electric discharge in mercury vapour and other metal iodides Ignition electrode Bimetal switch Starting resistor Position mogul Ballast section