Different forms of radiation comprise the electromagnetic spectrum and are characterized by their different wave frequency and wavelength.
Radiation is emitted from matter in the form of photons .
These electromagnetic waves have no mass and are not electrically charged. The shortest wavelength forms of radiation are most penetrating and are the most damaging to living tissue. Radioactivity is measured in terms of half-lives and is not affected by physical state or chemical combination. The principle law in the United States that governs the disposal of solid waste and the management of both solid and hazardous waste. The remaining material is used as a fuel to create energy.