X-RAY LUGGAGE INSPECTION
A X-rays make up X-radiation, a form of high-energy electromagnetic radiation. Most X-rays have a
wavelength ranging from 0.03 to 3 nanometres, corresponding to frequencies in the range
30 megahertz to 30 exahertz (3×1016 Hz to 3×1019 Hz) and energies in the range 100 eV to 200 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 as Rontgen radiation, after the German scientist Wilhelm
Rontgen, who discovered it on November 8, 1895.
He named it X-radiation to signify an unknown type of radiation.
Spelling of X-ray(s) in the English language includes the variants x-ray(s), xray(s), and X ray(s).