The phenomenon of spontaneous emission of highly penetrating radiations from heavy elements occurring in nature is called natural radioactivity. This note provides us an information on radioactive radiations.
The spontaneous breaking of a nucleus is known as radioactive disintegration. This note provides us an information on laws of radioactive disintegration and half life.
The isotopes of an element which are also radioactive are called radioactive isotopes or simply radioisotopes.This note provides us an information on Geiger Muller tube and radio carbon dating.