The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 612
a battery and thermostat. It isused to indicate whether the lamp in a railwaysignal lantern is burning or not. Lighting, Vacuum Tube. Illumination byhigh potential alternating discharges throughvacuum tubes. The advantage of this mode oflighting is that the light is produced withoutthe usually… … * €o8 STANDARD EIvECTRICAI, DICTIONARY. Lightning Arrester, Air Expansion. An arrester in whichthe discharge and ensuing arc takes place between a fixed and ahinged carbon electrode in a small marble box. The sudden airexpansion forces the hinged electrode out of the box, breakingthereby the arc,…
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