The nuclei of the atoms in some elements are unstable and emit radiation. The radiation can be of three types - alpha radiation, beta radiation and gamma radiation.

Types of Radiation The term "radiation" is very broad ... It later was renamed the International Commission on Radiological Protection (ICRP). Its purpose is to establish basic principles for, and ...

Naturally occurring radioactive materials are present in its crust, the floors and walls of our homes ... Man has always been exposed to natural radiation arising from the earth as well as from ...

All types of radiation become less intense as they travel further away from the radioactive material. This is because the particles or rays become more spread out. The thicker the substance ...