. The medical and surgical uses of electricity : including the X-ray, Finsen light, vibratory therapeutics, and high-frequency currents . ogether; within it is lodged and attached to the upperhemisphere, but perfectly insulated from the same at the attachment, an-other ball provided with spikes {^) radiating in all directions, but nottouching the inside walls of the hemispheres; another very small plati-num ball (c) lies within the large ball and can freely move in all direc-tions, knocking at the spikes (see Fig. 139). Two insulated wires—oneconnected with the hollow ball, the other with the
. The medical and surgical uses of electricity : including the X-ray, Finsen light, vibratory therapeutics, and high-frequency currents . ogether; within it is lodged and attached to the upperhemisphere, but perfectly insulated from the same at the attachment, an-other ball provided with spikes {^) radiating in all directions, but nottouching the inside walls of the hemispheres; another very small plati-num ball (c) lies within the large ball and can freely move in all direc-tions, knocking at the spikes (see Fig. 139). Two insulated wires—oneconnected with the hollow ball, the other with the spiked ball—are en-cased in a very fine, thin rubber tube, forming the cable, and separate atthe end into two branches, which must be attached to an electric battery. As soon as the platinum ball touches one of thespikes an electric circuit is made; as soon, how-ever, as the platinum ball moves a little asideand does not touch the spike any more, the cur-rent is broken. At each motion of the ballapparatus a rolling of the little platinum balltakes place and the electric current is eitherclosed or broken. When the apparatus is a.
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Keywords: ., bookauthorrockwell, bookcentury1900, bookdecade1900, bookyear1903
