Uses of Radiation

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  • Created by: Abbie
  • Created on: 26-02-12 20:57

Uses of Radiation

Sterilising machines in hospitals use gamma radiation to kill bacteria on medical instruments, they use a powerful radiation source with a long half-life, so it lasts a long time.

Smoke detectors use a weak source of alpha radiation to ionise the air between two electrodes making charged particles which carry a current. If there's a fire, the smoke absorbs the radiation, the current stops and the alarm goes off.

Medical tracers use beta or gamma radiation...

  • A source that emits beta or gamma radiation is injected or swallowed.
  • The radiation penetrates the body tissues and can be detected externally
  • As the source moves around the body, a radiographer uses a detector to monitor it's progress
  • A computer…

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