Crookes_tube_xray_experiment.jpg
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Summary
Description Crookes tube xray experiment.jpg |
English:
Photo of experimenters taking an
X-ray
with an early
Crookes tube
apparatus, from the late 1800s. The Crookes
x-ray tube
is visible suspended at center. The upper man is examining the bones of his hand with a
fluoroscope
screen. The lower man is taking a
radiograph
of his hand with a
photographic plate
. The power source is an
induction coil
, seen at left, and the mechanism immediately to its right against the wall is a motor-operated 'break wheel' interrupter in the coil's primary circuit. The large flat disk on the table is a rheostat (adjustable resistor) power control to adjust the primary current to the coil. Several spare Crookes X-ray tubes are seen in a rack on the wall. The apparatus is described and diagrammed on p.88 of the source. No precautions against radiation exposure are taken; its hazards were not known at the time. The original image was half-tone. Alterations: removed frame.
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Date | |
Source | Downloaded 2007-12-23 from William J. Morton and Edwin W. Hammer (1896) The X-ray, or Photography of the Invisible and its value in Surgery , American Technical Book Co., New York, fig. 54 on Google Books |
Author | William J. Morton |
Permission
( Reusing this file ) |
Public domain - published in USA before 1923 |
Licensing
Public domain Public domain false false |
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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This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the
rule of the shorter term
for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See
Wikipedia:Public domain
and
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for more details.
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