Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 254
alsoset-screws for connecting it with the vacuum tube, andadjustable electrodes above, to show the spark-length.At the farther left-hand corner are shown two. binding-posts for connecting the primary coil with the batteryand at the near corner a double-bladed reversing switch, THE EONTGEN X-RAYS… … Fig. 103. which wastes the electric energy, a special interrupter isused in connection with this coil, the construction ofwhich is shown in Figs. 103 and 104. It consists of a pair of wheels, placed one above theother and rotated horizontally in a tank of mineral oil,shown above, by a small…
Electricity
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