- It is high frequency radiation which is produced in nuclear reactions they are emitted by radioactive nuclei.
- Its frequency range is 10^18 Hz - 10^22 Hz.
- Its wavelength is < 10^-3 nm. From about 10^-10m to less than 10^-14m.
- It is deflected by photographic film, Geiger tubes, ionization chamber.
- They show phosphorescence, fluorescence, polarization, diffraction.
- They have very high penetrating power.
- They are used for cancer therapy.
- They provide important information regarding nuclear structure.
