what are x ray waves used for


X-ray - Wikipedia, the free encyclopedia

--------------------

** X-ray **

From Wikipedia, the free encyclopedia
Jump to: navigation, search
This article is about the nature, production and uses of the radiation. For
the method of imaging, see Radiography. For imaging in a medical context,
see Radiology. For other meanings, see X-ray (disambiguation).
Not to be confused with X-wave or X-band.
X-rays are part of the electromagnetic spectrum, with wavelengths shorter
than visible light. Different applications use different parts of the X-ray
spectrum.

*X-radiation* (composed of *X-rays*) is a form of electromagnetic
radiation. Most X-rays have a wavelength ranging from 0.01 to 10
nanometers, corresponding to frequencies in the range 30 petahertz to 30
exahertz (3×10^16 Hz to 3×10^19 Hz) and energies in the range 100 eV
to 100 keV. X-ray wavelengths are shorter than those of UV 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,^[1] who is usually credited as its discoverer, and who had
named it /X-radiation/ to signify an unknown type of radiation.^[2]
Spelling of /X-ray(s)/ in the English language includes the variants
/x-ray(s)/, /xray(s)/ and /X ray(s)/.^[3]

X-rays with photon energies above 5–10 keV (below 0.2–0.1 nm
wavelength) are called /hard X-rays/, while those with lower energy are
called /soft X-rays/.^[4] Due to their penetrating ability, hard X-rays are
widely used to image the inside of objects, e.g., in medical radiography
and airport security. As a result, the term /X-ray/ is metonymically used
to refer to a radiographic image produced using this method, in addition to
the method itself. Since the wavelengths of hard X-rays are similar to the
size of atoms they are also useful for determining crystal structures by
X-ray crystallography. By contrast


Source: en.wikipedia.org/wiki/X-ray

© 2005-2018 HaveYourSay.org