. 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 . UNLET TUBEFOR COOLINGAIR OR WATER HOLLOWJ-LATINUM TARGET Fig. 27. Section of cooled target tube. (Rollins.). The A. W. L. tube for direct currents. Rotary target type. (Rollins.)This illustrates a form of tube which I have used in some of my work. It was designed for meby Dr. Rollins. The target may be rotated by jarring the tube. If a hole should be melted in thetarget by the heat produced by the impact of the cathode stream, a fresh surface can b
. 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 . UNLET TUBEFOR COOLINGAIR OR WATER HOLLOWJ-LATINUM TARGET Fig. 27. Section of cooled target tube. (Rollins.). The A. W. L. tube for direct currents. Rotary target type. (Rollins.)This illustrates a form of tube which I have used in some of my work. It was designed for meby Dr. Rollins. The target may be rotated by jarring the tube. If a hole should be melted in thetarget by the heat produced by the impact of the cathode stream, a fresh surface can be brought intoposition, thus making the tube as useful as a new one. If, however, the target is sufficiently thick, itis rarely melted. It must be remembered that when this fresh surface is first used the resistanceof the tube may be temporarily lowered, as gas is liberated. The curved disk on the right of the glass bulb is the cathode, and is made of aluminum. Themetal disk in the middle of the bulb is the anode, upon which the rays from the cathode are focussed. i X-RAY EQUIPMENT 2>7
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