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1. www.smithsonianmag.com › history › clarence-dallyClarence Dally — The Man Who Gave Thomas Edison X-Ray Vision

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   Wikipedia. In 1895, the German physicist Wilhelm Roentgen was experimenting with gas-filled vacuum tubes and electricity; that November he observed a green fluorescent light coming from a tube that...

2. technicianjourney.com › 2018/08/17 › clarence-dallyClarence Dally: a technician in trouble – #technicianjourney

   technicianjourney.com › 2018/08/17 › clarence-dally

   Aug 17, 2018 · However, as X-ray technology became more widely used, doctors found they preferred the more permanent photographic plate record for X-rays rather than the Edison’s fluoroscope. Photographic plates also meant a much lower dose of X-rays to the radiographer and patient. Figure 3: Dally (arrow) undergoes fluoroscopy by Thomas Edison. [4]

3. People also ask

   What did Clarence Dally do?

   • Equally fascinated, Clarence Dally took to the work enthusiastically, performing countless tests, holding his hand between the fluoroscope (a cardboard viewing tube coated with fluorescent metal salt) and the X-ray tubes, and unwittingly exposing himself to poisonous radiation for hours on end.

   Clarence Dally — The Man Who Gave Thomas Edison X-Ray Vision

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   How did Dalley get a fluoroscope?

   • He spent hours blowing glass tubes, which were laced with calcium tungstate, for an early model fluoroscope. As part of this experimentation Dalley would spend hours exposing himself to dangerous radiation, eventually having to sleep with his hands in water to soothe the burning.

   Thomas Edison | Radiology Reference Article | Radiopaedia.org

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   Who was Clarence Madison Dally?

   • No one knew this better than Edison mucker Clarence Madison Dally, who unwittingly gave his life to help develop one of the most important innovations in medical diagnostic history. When it became apparent what Dally had done to himself in the name of research, Edison walked away from the invention. “Don’t talk to me about X-rays,” he said.

   Clarence Dally — The Man Who Gave Thomas Edison X-Ray Vision

   www.smithsonianmag.com/history/clarence-dally-the-man-who-gave-thomas-edison-x-ray-vision-123713565/

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   How did Clarence Dally die?

   • …he noticed that his assistant, Clarence Dally, was so “poisonously affected” by the new rays that his hair fell out and his scalp became inflamed and ulcerated. By 1904 Dally had developed severe ulcers on both hands and arms, which soon became cancerous and caused his early death.

   Clarence Dally | American scientist | Britannica

   www.britannica.com/biography/Clarence-Dally

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4. en.wikipedia.org › wiki › Clarence_Madison_DallyClarence Madison Dally - Wikipedia

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   Following Röntgen 's work on X-rays in 1895, Clarence and his brother Charles worked on the development of the Edison X-ray focus tube, developing the fluoroscope using calcium tungstate. The Edison fluoroscope produced sharper images than the Röntgen fluoroscope, which used barium platinocyanide.

5. www.britannica.com › biography › Clarence-DallyClarence Dally | American scientist | Britannica

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   early radiation experiments. …he noticed that his assistant, Clarence Dally, was so “poisonously affected” by the new rays that his hair fell out and his scalp became inflamed and ulcerated. By 1904 Dally had developed severe ulcers on both hands and arms, which soon became cancerous and caused his early death.

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7. www.ncbi.nlm.nih.gov › pmc › articlesEarly victims of X-rays: a tribute and current perception

   www.ncbi.nlm.nih.gov › pmc › articles

   The story goes that one of them was told by his physician that if he continued to work with X-rays it would be necessary to amputate his hands. The worker threatened with amputation was probably Clarence Dally, Thomson Edison's glassblower. Clarence Dally was likely to have had an absorbed dose of approximately 3000 rads to necessitate amputation.

8. www.auntminnieeurope.com › clinical-news › digital-xWas Clarence Dally a radiology martyr or victim ...

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   Jul 11, 2019 · Page 1 of 160. Clarence Dally was a trusted assistant of Thomas Edison who helped develop the fluorescent lamp and the x-ray tube. Even when he became aware of the dangers, he continued his work, but eventually died from the effects of radiation. History columnist Dr. Adrian Thomas tells the fascinating story of this x-ray pioneer.

9. radiopaedia.org › articles › thomas-edisonThomas Edison | Radiology Reference Article | Radiopaedia.org

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   Aug 9, 2021 · Termination of x-ray experimentation. Edison immediately ceased his experimentation into x-rays following the death of Clarence Dalley, famously stating, "don't talk to me about x-rays, I am afraid of them.". Yet his brief tenure in the field lead to the discovery and development of an application still used in radiology today, fluoroscopy.