. The Röntgen rays in medical work . Fig. 25.—Wehnelt Interrupter (Sakitas Co.). ing with the full pressure of the main the discharges were so rapidand powerful that the tubes were quickly destroyed. The electro-lyte also became heated, and ceased working. In the modern formsof Wehnelt interrupter these defects have been corrected, and thereis no doubt that this type of interrupter has the advantage ofsimplicity, and, if suitably regulated, it is a very useful interrupterfor use with the continuous current mains. It is not suitable foruse with batteries, because it requires large currents and

. The Röntgen rays in medical work . Fig. 25.—Wehnelt Interrupter (Sakitas Co.). ing with the full pressure of the main the discharges were so rapidand powerful that the tubes were quickly destroyed. The electro-lyte also became heated, and ceased working. In the modern formsof Wehnelt interrupter these defects have been corrected, and thereis no doubt that this type of interrupter has the advantage ofsimplicity, and, if suitably regulated, it is a very useful interrupterfor use with the continuous current mains. It is not suitable foruse with batteries, because it requires large currents and Stock Photo
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Reading Room 2020 / Alamy Stock Photo

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2CRPJM8

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1663 x 1502 px | 28.2 x 25.4 cm | 11.1 x 10 inches | 150dpi

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. The Röntgen rays in medical work . Fig. 25.—Wehnelt Interrupter (Sakitas Co.). ing with the full pressure of the main the discharges were so rapidand powerful that the tubes were quickly destroyed. The electro-lyte also became heated, and ceased working. In the modern formsof Wehnelt interrupter these defects have been corrected, and thereis no doubt that this type of interrupter has the advantage ofsimplicity, and, if suitably regulated, it is a very useful interrupterfor use with the continuous current mains. It is not suitable foruse with batteries, because it requires large currents and highpressures. 46 THE RONTGEN RA YS IN MEDICAL WORK To control the Wehnelt interrupter, one may vary the exposedsurface of the platinum anode, or the pressure of supply in theprimary circuit, or the degree of self induction in the primary coil. By increasing the surface of the platinum the current is increased, and the rapidity of the interruptions diminishes; and by reducingthe exposed surface of the platinum the opposite effect i

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