In: Physics
What is X-ray
X-rays make up X-radiation, 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 (3×1016 Hz to 3×1019 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
Further:
Imagine you had the job of redesigning light to make it a bit more
powerful—so you could see through bodies, buildings, and anything
else you fancied. You might come up with something a bit like X
rays.
X rays are a kind of super-powerful version of ordinary light: a higher-energy form of electromagnetic radiation that travel at the speed of light in straight lines (just like light waves do). If you could pin X rays down on a piece of paper and measure them, you'd find their wavelength (the distance between one wave crest and the next) was thousands of times shorter than that of ordinary light. That means their frequency (how often they wiggle about) is correspondingly greater. And, because the energy of electromagnetic waves is directly related to their frequency, X rays are much more energetic and penetrating than light waves as well. So here's the most important thing you need to remember: X rays can travel through things that ordinary light waves can't because they're much more energetic.
Use of X-ray:
From studying tooth decay in your mouth to detecting events in
distant galaxies, X rays are useful in many different ways