Radiation is energy travelling through space and it is all around us, coming from both natural and artificial sources. While radiation
has many practical uses, for example in medicine, certain types can cause damage to matter. Ionising radiation, as it is known, can
produce charged particles called ions, which can affect us and the things around us.

Some radiation is emitted naturally by uranium but the process of nuclear fission produces much more. For this reason, great care is taken in planning and developing nuclear facilities and their operating procedures to protect workers.