Incandescent electric lights . be easilytaken out ai)d weighed, as the work donecan be calculated from the weight ofcopper deposited. One of these voltame-ters is open to the subscriber, the otheris kept closed by the controller. Resistance bobbins introduced into the circuitcorresponding to these resistance, per-mits of the employment of greater orless periods of registration. A small incandescent lamp placed be-neath the apparatus, and which can bethrown into circuit by a simple metallicthermometer, prevents any danger offreezing in extremely cold weather. There is another application of Mr.
Incandescent electric lights . be easilytaken out ai)d weighed, as the work donecan be calculated from the weight ofcopper deposited. One of these voltame-ters is open to the subscriber, the otheris kept closed by the controller. Resistance bobbins introduced into the circuitcorresponding to these resistance, per-mits of the employment of greater orless periods of registration. A small incandescent lamp placed be-neath the apparatus, and which can bethrown into circuit by a simple metallicthermometer, prevents any danger offreezing in extremely cold weather. There is another application of light, which can be seen at hisexposition in a model intended for light-ing galleries in mines. In this arrange-ment, represented in Fig. 18, the lamp isintroduced in a glass receptacle filledwith water and held in of the apparatus withthe circuit is arranged in such a way 36 that the points of contact are covered bywater, which avoids any danger of ex-plosion in mines infested with fire Fig. 18. To give an idea of the application ofMr. Edisons systems, we have represent-ed in the large engraving accompanyingthis article, Fig. 19, the interior of a
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Keywords: ., bookcentury1800, bookdecade1880, bookidincandescent, bookyear1882
