Free radiation
Free radiation (English: ionizing radiation) refers to the short wavelength, high frequency, high energy ray (particle or wave of the dual form). Radiation can be divided into free radiation and non-free radiation, free radiation from the atomic or molecular ionization process (Ionization) in the role of at least one electron. On the contrary, non-free radiation is not. Freedom is determined by the amount of energy emitted by rays (particles or waves), not the number of rays. If the rays do not have enough free energy, a lot of rays can not lead to free. ...