File:Fluoroscopy procedure 1909.jpg
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Summary
| Description |
English: Woman having a fluoroscopy of the spine in 1909, using the earliest type of x-ray apparatus. The early Crookes x-ray tube supported by the pole is covered with a lead shield so it only emits a beam toward the patient. It is powered by high voltage electricity generated by the large electrostatic machine in the background, probably a Holtz machine. The doctor holds a fluorescent screen up to her back, a piece of glass painted with a fluorescent chemical such as calcium tungstate or barium platinocyanide, and the x-rays passing through her body cause areas where they strike to fluoresce with a greenish glow. No precautions against radiation exposure are taken, as its dangers were not known at the time. |
| Date | |
| Source | Retrieved December 22, 2014 from Edwin J. Houston, "Elementary Electricity Ch. 13: The X-rays" in Popular Electricity magazine, Popular Electricity Publishing Co., Chicago, Illinois, Vol. 2, No. 1, May 1908, p. 6, fig. 87 on Google Books |
| Author | Edwin J. Houston |
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:10, 2 May 2021 | | 1,510 × 1,196 (457 KB) | Materialscientist | FFT |
| 19:21, 29 December 2014 |  | 1,510 × 1,196 (254 KB) | Chetvorno | User created page with UploadWizard |
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