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X-ray |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.01 sec. |
X-rayElectromagnetic radiation of extremely short wavelength (100 nanometres to 0.001 nanometre) produced by the deceleration of charged particles or the transitions of electrons in atoms. X-rays travel at the speed of light and exhibit phenomena associated with waves, but experiments indicate that they can also behave like particles (see wave-particle duality). On the electromagnetic spectrum, they lie between gamma rays and ultraviolet radiation. They were discovered in 1895 by Wilhelm Conrad Röntgen, who named them X-rays for their unknown nature. They are used in medicine to diagnose bone fractures, dental cavities, and cancer; to locate foreign objects in the body; and to stop the spread of malignant tumours. In industry, they are used to analyze and detect flaws in structures. |
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| Wondering whether the extra calories from acetate produced extra fat, the researchers X-rayed the mice to measure their fat deposits. According to SmartPill CEO David Barthel, one current method of discovering what ails your GI system, called gastric emptying scintigraphy, is a daylong ordeal that requires visiting a hospital, eating meals dosed with radiation and being X-rayed every half-hour. But I was X-rayed and wanded and had to take my shoes off for the first time ever, and my belt. |
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