X
X-rays short-wavelength electromagnetic ionizing radiation, which can penetrate the body structures to varying degrees. Discovered in 1895 by Wilmhelm Röntgen, a German physicist (the very first X-ray photograph showed the bones of his wife’s hand, with her wedding ring). Used in general, and in sport, to produce photographic images of body structures, notably bones (to detect fractures), also heart and lungs. See also radiography, radiology.
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