an X-ray representation of blood vessels made after the injection of a radiopaque substance
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n a dental X-ray film that can be held in place by the teeth during radiography
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motion-picture and X-ray film
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United States physicist noted for research on x-rays and gamma rays and nuclear energy
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his observation that X-rays behave like miniature bowling balls in their interactions with electrons provided evidence for the quantal nature of light (1892-1962)
