This German's discovery of x-rays in 1895 had visible effects in diagnosing medical problems
[DOC] [TLE] X-ray | radiation beam | Britannica.com [PAR] The biological effects of ionizing radiation, which are complex and highly ... X-
rays were discovered in 1895 by German physicist Wilhelm Konrad Rntgen ... of 
the more familiar components of the electromagnetic spectrumvisible light, .... X
-ray images of the body are an indispensable diagnostic tool in modern medicine
.