hened. The " In using the machine for the produc- quantity of electricity generated by the tion of the electric light, it may happen machine as well as the mechanical power that, through any external cause, impuri- expended in running it, will thus rapidly j ties in the carbons, for instance, the… … Fig. 24. minute, for which 6 horse-power is re- sumption of power on the part of the quired, an electric light of 1,400 standard machine suddenly falls almost to zero, candles. The current produced by it is and a considerable (even dangerous) in- capable of heating to redness a copper crease in the…
Engineering
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