American X-ray journal (1901) (14571471039)

Identifier: americanxrayjour9101unse (find matches)

Title: American X-ray journal

Year: 1902 (1900s)

Authors:

Subjects: X-Rays Radiography

Publisher: St. Louis : American X-Ray Publishing Co.

Contributing Library: The College of Physicians of Philadelphia Historical Medical Library

Digitizing Sponsor: Open Knowledge Commons and the National Endowment for the Humanities

Text Appearing Before Image:

with gradations.The static electricity has weatheredmany storms of adverse criticism, butwith the remarkable discovery of Prof.Wm. Conrad Roentgen, it was found,that unlike other apparatus for x-raygeneration which possess but singleutility, the main representative of staticelectricity, the influence machine, is acommodity of the utmost therapeutic glass disks arranged with rubbers, collec-tors and inducing strips; they may bestrictly frictional orinfluencemachines.The charges produced reside only on thesurfaces of the bodies charged, andtwo mutual and equal phases of ex-citement are developed, the positive andnegative charges with affinity for eachother, neutralizing both. If the chargeis great enough, the positive and nega-tive surfaces need not be in actual con-tact, and we get a good spark for ourx-ray work. It is necessary to find outfirst which is the positive and the nega-tive prime conductor on our machine.The conductors are then connected withsmall condensers, known as Leyden

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value. A Static Machine may be util-ized as an instrument that combinestreatment with diagnosis, capable ofaccomplishing good work in the x-rayfield, and exercising a power to producea thoroughly efficient form of medica-tion in Electrology and Radiology both.The Static Machine is a very simple,safe and most convenient method of pro-ducing x-rays, especially in the officeof the busy practitioner, and being inde-pendent of an electric circuit from thestreet, and generating its own electricsource, it can be operated very easily inany locality, and is always ready for in-stant use. In the Static Machines, powerfulcharges are produced by the revolution of Jars, the size of these jars to be selectedin accordance with the degree of vacuumof our Crooks tube. The connectingwires resting on some wooden support,stand, have to be covered with rubber tub-ing and go to the cathode and anode ofour Crooks tube, having for the success-ful excitation of the same as a key, thespark-gap between the disc

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1901

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