Accessibility Information and Accesskeys | Skip navigation

Radiation Protection Glossary

Search the Glossary by either clicking on a letter or typing a Keyword into the search box.

A | B | C | D | E | F | G | H | I | J | K | L | M
N | O | P | Q | R | S | T | U | V | W | XYZ
Distance, in the context of Radiation Protection , relates to one of the three key principles of protection against External Radiation hazards (i.e. Time , Distance & Shielding ). In simple terms, increasing the distance between a static source of Ionising Radiation and the absorbing medium (e.g. a person) will reduce the exposure to that person. For certain defined geometries, (e.g. Point Source ), the Inverse Square law can be applied which can be stated as: 'double the distance, quarter the dose'.