Roumlntgen Ray

An X ray originally the term was applied to any of the rays produced when cathode rays strike upon surface of a solid as the wall of the vacuum tube but now it refers specifically to electromagnetic radiation having wavelengths from 10 3 nm to 10 nm immediately below ultraviolet radiation on the wavelength scale Roumlntgen rays are noted for their penetration of opaque substances as wood and flesh their action on photographic plates and their fluorescent effects They were called X rays by their discoverer W K Roumlntgen They are one of the forms of ionizing radiation which can have damaging effects on living cells They also ionize gases but cannot be reflected or polarized or deflected by a magnetic field They are used in examining opaque objects especially in medicine for visualizing organs and other objects inside the human body as for locating fractures or bullets and examining internal organs for abnormalities