X-rays
(or Röntgen rays) are a form of electromagnetic radiation with
a wavelength in the range of 10 to 0.01 nanometers, corresponding
to frequencies in the range 30 PHz to 30 EHz. X-rays are primarily
used for diagnostic radiography and crystallography. X-rays are
a form of ionizing radiation and as such can be dangerous. In many
languages it is called Röntgen radiation after one of the first
investigators of the X-rays, Wilhelm Conrad Röntgen [1]

[1]
X-rays, (last visited Nov. 25, 2007).
|