These types of electromagnetic radiation are usually measured in Angstrom units. Visible light ranges from 4600, to 7000-Angstrom units. The main uses for x-rays are for medical use. Mainly for detecting broken bones and dental uses. They can also be used for detecting abnormalities and diseases.
Bones absorb more light than muscle, so they show up better.
X-rays are also used to kill cancer. They kill the cancer cells easier than normal cells. X-rays are also used to sterilize products like plastic. Since x-rays can be very dangerous, shields are needed so certain body parts are not damaged. Substances with a high atomic mass will absorb more x-rays than substances with a lower atomic mass.