Practical electro-therapeutics and X-ray therapy - with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray (1912) (14570444598)

Identifier: practicalelectro00mart (find matches)

Title: Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray

Year: 1912 (1910s)

Authors: Martin, James Madison, 1866-1947

Subjects: Electrotherapeutics X-rays Diagnosis, Radioscopic Eye Electric Stimulation Therapy X-Ray Therapy Ophthalmologic Surgical Procedures

Publisher: St. Louis : C.V. Mosby

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

mall wire is soldered to the upper end ofthe large wire and the upper end of the small wire is fastened to abinding post Nl. The lower end of the heavy wire coil is con-nected to the outside coating of one of the Leyden jars and theoutside coating of the other jar is connected by wire i to a movableshoe K. This shoe is so arranged that it can be raised or lowered,and in this way is made to come into metallic contact with eitherturn of the winding of the large coil H. By this method of in-creasing and decreasing the number of turns of the large coil inthe circuit the resonance in the coil L can be perfectly controlled.When a wire conductor P is connected to the binding post Nl andto a vacuum electrode O, the electrode will fluoresce or glow inproportion to the number of large coils of wires in the circuit andthe vacuum of the electrode. When this apparatus is operatedin a dark room, a blue spray or effluve will be seen about the wind- 64 PRACTICAL ELECTRO-THERAPEUTICS AND X-RAY THERAPY

Text Appearing After Image:

Fig. 31.—Oudin resonator. ELECTROSTATICS 65 ings of the coil L, and, if the hand or other objects are broughtnear the upper terminal of the coil, sprays or sparks will pass be-tween the terminal and the object so presented. High-frequency currents are used through a vacuum electrodedirectly to the surface of the body, or through an autocondensa-tion couch or an autoconduction cage. Fig. 32 shows the arrange-ment for giving the autocondensation couch treatment. A heavycushion of a good insulating material is placed upon a large zincplate A, which is connected to binding post V in Fig. 31. When

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1912

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