X-radiation (componed o X-rays) is a form o electromagnetic radiation. Maist X-rays hae a wavelength in the range o 0.01 tae 10 nanometers, correspondin tae frequencies in the range 30 petahertz tae 30 exahertz (3×1016 Hz tae 3×1019 Hz) an energies in the range 100 eV tae 100 keV. Houiver, much heicher-energy X-rays can be generatit for medical an industrial uises, for example radiotherapy, which utilizes linear accelerators tae generate X-rays in the ranges o 6–20 MeV. X-ray wavelengths are shorter nor those o UV rays an teepically langer nor those o gamma rays. In mony leids, X-radiation is referred tae wi terms meanin Röntgen radiation, efter Wilhelm Röntgen,[1] who is uisually creditit as its discoverer, an who haed named it X-radiation tae signify an unkent teep o radiation.[2] Spellin o X-ray(s) in the Inglis leid includes the variants x-ray(s), xray(s) an X ray(s).[3]

X-rays are pairt o the electromagnetic spectrum, wi wavelengths shorter nor veesible licht. Different applications uise different pairts o the X-ray spectrum.


  1. "X-Rays". NASA. Retrieved November 7, 2012.
  2. Novelline, Robert (1997). Squire's Fundamentals of Radiology. Harvard University Press. 5th edition. ISBN 0-674-83339-2.
  3. "X-ray". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public leebrar membership required.)