View source for X-ray

'''X-radiation''' (composed of '''X-rays''') is a form of electromagnetic radiation. Most X-rays have a wavelength in the range of 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×10<sup>16</sup> Hz to 3×10<sup>19</sup> Hz) and energies in the range 100 eV to 100 keV.  X-ray wavelengths are shorter than those of ultraviolet rays and typically longer than those of gamma rays. In many languages, X-radiation is referred to with terms meaning "Röntgen radiation," after Wilhelm Röntgen,<ref name="XRayNASA">{{cite web |url=http://missionscience.nasa.gov/ems/11_xrays.html |title=X-rays |publisher=NASA |accessdate=06 August 2014}}</ref> who is usually credited as its discoverer, and who had named it ''X-radiation'' to signify an unknown type of radiation.<ref name="NovellineSquire">{{cite book |url=http://books.google.com/books?id=XhFbngxk8lMC&pg=PA1 |title=Squire's Fundamentals of Radiology |author=Novelline, Robert A.; Squire, Lucy Frank |publisher=La Editorial, UPR |year=2004 |page=1 |isbn=9780674012790 |accessdate=06 August 2014}}</ref> 

Spelling of "X-ray(s)" in the English language includes the variants ''x-ray(s)'', ''xray(s)'', and ''X ray(s)''.
==References==
<references />

<!---Place all category tags here-->
[[Category:Science terms]]