r the anode and one for the cathode.The anode is the point where the current entersthe tube. The cathode is the point where thecurrent leaves. Hence, either electrode of thetube, may be made the cathode, by simply FOR EVERYBODY. 23 reversing the direction of the current. A goodtube not more than… … figure 17B. larger tube is used the coil should give a sparkfrom three to ten inches. By this we meanthat the secondary current should jump in the airthe distance between the electrodes of the coilthe above number of inches. If there is ablue glow that shows in a tube it will not 24 SOMETHING ABOUT…
X-rays · Fluorescence
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