What are gamma rays and x rays useful for?
X-Ray are An electromagnetic wave of high energy and very short
wavelength (between ultraviolet light and gamma rays) that is able
to pass through many materials opaque to light.
Gamma-rays have the smallest wavelengths and the most energy of
any other wave in the electromagnetic spectrum. These waves are
generated by radioactive atoms and in nuclear explosions.
Gamma-rays can kill living cells, a fact which medicine uses to its
advantage, using gamma-rays to kill cancerous cells.