File:Crookes tube xray experiment.jpg
Summary
Photo of experimenters taking an <a href="https://en.wikipedia.org/wiki/X-ray" class="extiw" title="en:X-ray">X-ray</a> with an early <a href="https://en.wikipedia.org/wiki/Crookes_tube" class="extiw" title="en:Crookes tube">Crookes tube</a> apparatus, from the late 1800s. The Crookes <a href="https://en.wikipedia.org/wiki/x-ray_tube" class="extiw" title="en:x-ray tube">x-ray tube</a> is visible suspended at center. The upper man is examining the bones of his hand with a <a href="https://en.wikipedia.org/wiki/fluoroscope" class="extiw" title="en:fluoroscope">fluoroscope</a> screen. The lower man is taking a <a href="https://en.wikipedia.org/wiki/radiograph" class="extiw" title="en:radiograph">radiograph</a> of his hand with a <a href="https://en.wikipedia.org/wiki/photographic_plate" class="extiw" title="en:photographic plate">photographic plate</a>. The power source is an <a href="https://en.wikipedia.org/wiki/induction_coil" class="extiw" title="en:induction coil">induction coil</a>, 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.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:19, 4 January 2017 | | 1,161 × 734 (270 KB) | 127.0.0.1 (talk) | Photo of experimenters taking an <a href="https://en.wikipedia.org/wiki/X-ray" class="extiw" title="en:X-ray">X-ray</a> with an early <a href="https://en.wikipedia.org/wiki/Crookes_tube" class="extiw" title="en:Crookes tube">Crookes tube</a> apparatus, from the late 1800s. The Crookes <a href="https://en.wikipedia.org/wiki/x-ray_tube" class="extiw" title="en:x-ray tube">x-ray tube</a> is visible suspended at center. The upper man is examining the bones of his hand with a <a href="https://en.wikipedia.org/wiki/fluoroscope" class="extiw" title="en:fluoroscope">fluoroscope</a> screen. The lower man is taking a <a href="https://en.wikipedia.org/wiki/radiograph" class="extiw" title="en:radiograph">radiograph</a> of his hand with a <a href="https://en.wikipedia.org/wiki/photographic_plate" class="extiw" title="en:photographic plate">photographic plate</a>. The power source is an <a href="https://en.wikipedia.org/wiki/induction_coil" class="extiw" title="en:induction coil">induction coil</a>, 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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