. Röntgen rays and electro-therapeutics : with chapters on radium and phototherapy . the upper section being more brilliant than the lower. 182 ELECTEO-THEEAPEUTICS. Miiller, of Hamburg, and E. Ducretet, of Paris, have brought forwarda tube, resembling in many respects the Sayen tube, but differing from itin that the regulating discharge passes directly into the auxiliary tube 5the latter containing caustic potash. (Fig. 90.) When the vacuum in themain tube becomes too high, and consequently the resistance too great,the current passes into the auxiliary chamber, whereby the potash be-comes hea
. Röntgen rays and electro-therapeutics : with chapters on radium and phototherapy . the upper section being more brilliant than the lower. 182 ELECTEO-THEEAPEUTICS. Miiller, of Hamburg, and E. Ducretet, of Paris, have brought forwarda tube, resembling in many respects the Sayen tube, but differing from itin that the regulating discharge passes directly into the auxiliary tube 5the latter containing caustic potash. (Fig. 90.) When the vacuum in themain tube becomes too high, and consequently the resistance too great,the current passes into the auxiliary chamber, whereby the potash be-comes heated and emits vapor ; this vapor diffuses itself through the maintube, thus lessening the too great resistance. Attached to the auxiliarycircuit is a lever that regulates the interval of the spark-gap ; the moredistant the lever from the cathode of the main tube, the higher the vac-uum in that tube ; the nearer the cathode, the lower the vacuum. Should the resistance in the main tube be in excess of that of thespark-gap, the current takes the path of lesser resistance and passes. K— Fig. 90.—Miillers regulation tube. • through the side tube. The presence of sparks in the spark-gap showsthat the process is proceeding. Should the vacuum in the main tube be-come too low (soft), disconnect the wire from the anode of the main tubeand attach it to the terminal of the electrode in the auxiliary discharge that passes under this adjustment causes metallic particlesto be driven against the sides of the tube and the generation of more gasto be occluded on the electrode (auxiliary). Thus the vacuum of thetube may be materially raised. In order to clarify the above statements, it may be stated that theauxiliary tube ^ B contains an electrode, C, of a substance which willgive off a certain quantity of gas by the electric discharge passing throughit, and will thus lower the vacuum. This is effected by approaching thewire ^ E to the cathode ^ ^ K and thus permitting the spar
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradiolo, bookyear1910
