Identifier: practicalpointsi00judd (find matches)
Title: Practical points in the use of X-ray and high-frequency currents
Year: 1909 (1900s)
Authors: Judd, Aspinwall
Subjects: X-rays Electrotherapeutics Radiography X-Rays Radiography
Publisher: New York : Rebman Company
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
cushion, the other cord connects theballs on the chair to the other jar. Note. It is essential that there should be aproper relation between the size of the primarywire windings in the Tesla coil and the capacityof the condensers. The intensifying electrode is really a reson-ator, and its weight being slight, it can as easilybe handled as a vacuum tube; gives it a con-siderable advantage over the Oudin, especially asin its results it is of at least equal value. Themaximum of effect is produced by placing thepatient without shoes upon some insulated sur-face attached to one wire of the high-frequencyapparatus. The intensifying electrode is at-tached to the other wire and approached to asuitable distance from the patient. The effluveis painless and almost invisible unless the room High-Frequency Apparatus 57 is darkened. When this is done, a heavy sprayof fire is seen to pass from the electrode to thepatient, spreading out brushlike in all direc-tions as it touches him.55 (See Fig. 22.)
Text Appearing After Image:
Fig. 22.—Shows a cylinder having a continuous winding on it, the lowerend being connected to the outer coating of one Leyden jar. Arepresents a sliding contact on a post, which is connected with theouter coating of the other Leyden jar. As this contact is moved upor down, the spark from the top of the resonator is varied, and foreach spark gap length between A and A the sliding contact canbe varied so as to get a maximum spark from the top of the resonator. Electrodes. These are usually hollow glasstubes exhausted to a low vacuum, and may beblown in any shape desired to fit the hollowcavities, such as the nares, the throat, the vagina,the rectum, or with a flat surface to be applied 58 X-Ray and High-Frequency Currents to the surface of the body. They are fixed in aninsulated handle, and a wire from one terminal isattached, the other terminal being connected tothe patient by means of a wire and a brass han-dle, usually in the form of a ball or hollowcylinder. iff

Note About Images