Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules (1908)
National correspondence school of railroading, Chicago. [from old catalog] · [Chicago] · leaf 326
temperature beyond a certainpoint, these small particles of carbon are dissipated be-fore they reach the point of the copper electrode, and theelectrode will melt or fuse, giving off a green light. When the green light is observed, and there is noth-ing else so intensely green as a shaft of light… … PLATE 138. If the wires are connected in such a manner that thecurrent can pass through the solenoid 65, and enter thecopper electrode 109, and pass through the electrode andinto the carbon, the usual course of the current will bereversed, and the copper electrode will be converted intothe positive…
Locomotives
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