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Scientific American, Vol. 88, No. 23 (June 1903) (1903)

leaf 10

An illustration from Scientific American, Vol. 88, No. 23 (June 1903), 1903, leaf 10
o a telephone circuit, was most convenient method of handling the cell; and by then, according to the law referred to, it must be ex- caused to vibrate very perceptibly. This suggested to ceedingly irrational to employ liquid air, seeing that keeping it from the air the disadvantages inherent in… … coil, but allows the in- sumed for the purpose OF RUHMER'S STATION ON THE OUTSKIRTS OF BERLIN, RECEIVING STATION OF RUHMER'S SYSTEM duction current in the of supplying trolley and SHOWING THE HUGE MIRROR. LIGHT-TELEPHONY. transmitter circuit to telegraph poles, and at with. Another form of Ruhmer…

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