American X-ray journal (1902) (14570925627)

Identifier: americanxrayjour1119unse (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:

charging voltage into the millions, butthe quantity of electricity (ampere) is verysmall. I used this Crookes tube in thiscase and the machine was hitched up,as you see it now. The current at firstcame in improperly, that is in reversal,and I changed the poles by changing thetube so that the positive current enteredthe tube at the positive end. It is not

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at all in doing x-ray work. The fluoros-cope. as you see is so arranged that younecessary now-a-days to darken the room y THE AMERICAN X-RAY JOURNAL. 1084 see the thing you seek without day-lightentering or interfering. The bolt of silkwas about eight inches thick and theboard about one inch. The ultra-violet,or x-rays, or Roentgen ray, as it is called*readily go through cloth and wood, thatis, this character of fibre is transparent tothe ray. Metal is either translucent oropaque and therefore absorbs the rays.The watches being opaque, no rays pass-ing through, they showed up black uponthe screen in the fluoroscope. To get thisview I placed the bolt of cloth againstthe fluoroscope, the tube being six inchesfrom the bolt. The plates of the ma-chine were revolved with electric motorpower. I did not require great radianceand therefore had my plates revolvingrather slowly for x-ray work. This wascontrolled by rheostat which regulatedthe speed of the motor. Instantly I sawthe shape of watc

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1902

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