. Die Roentgenstrahlen in der Medizin und Chirurgie als Hilfsmittel bei der Diagnose und als therapeutisches Mittel; für den Einsatz von Praktikern und Studenten konzipiert. Bis eine ausreichende Menge an Dampf in das Hauptrohr getrieben worden ist, dass der Weg des geringsten Widerstands zu machen. Der Widerstand kann durch den Regler variiert werden, indem der Funkenpunkt in beträchtlichem Abstand zur Kathode des Hauptrohrs oder in der Nähe dieser platziert wird.Diese Methode ist hervorragend geeignet, um den Widerstand automatisch zu regulieren, Und ermöglicht es dem Bediener, das gleiche Rohr zu verwenden und dennoch die Widerstandstanz hoch oder niedrig zu halten, wie er es wünscht. Die Badewanne
2552 x 979 px | 21,6 x 8,3 cm | 8,5 x 3,3 inches | 300dpi
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. The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent; designed for the use of practitioners and students . til a sufficient amount of vapor has been driven into the maintube to make that the path of least resistance. The resistance, bymeans of the regulator, may be varied by placing the spark-point ata considerable distance from or close to the cathode of the main tube.This method is an excellent one for automatically regulating the resist-ance, and enables the operator to use the same tube and yet have the resist-ance high or low as he desires. The tubes are made in Philadelphia. {b) By an auxiliary bulb containing other chemicals. Rollins hasdevised regulators which are operated either by heating the bulb or bypassing an electric current through it, oxygen, nitrogen, or hydrogenbeing thus liberated, according to the chemical used. 1 Electrical Revieiv, New York, May 12, 1897, P- 226. X-RAY EQUIPMENT 45 2. By the liberation of gas from the terminals. If the tube is newand a powerful machine is used, the gas may be set free from theterminals by driving an electric current through the tube.. Fig. 38. A. W. L. X-light tube with a rotary, sliding target and an automatic regulator (Rollins). This regulator R can be used to lower permanently the high resistance of the tube or to vary theresistance as the examination proceeds. The resistance can be temporarily lowered by pushing in therod, seen on the upper part of the cut, and raised again by drawing it out. This regulation of the resist-ance is accomplished by means of a substance, placed in the arms of the cross, that is mixed with aconducting powder. In this mixture a great number of spark-gaps are formed and gas is liberated whenthe electric current passes, and absorbed when it ceases. The resistance may be permanentlylowered by heating the head of the cross, as this head contains a substance which liberates gas, whenheat is applied to it, that is not reabsorbed. 3. By the libe
