Uses of Radiation- Physics P1


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  • Alpha radiation is stopped by a few cm of air, which makes alpha quite a safe source of radiation.
  • It is used in smoke alarms.
  • It's particles ionise easily which help this as
  • It has got a long half life, this is also useful as smoke alarms will last for longer.
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  • Beta radiation has got a short half life.
  • It is stopped by thin metal.
  • It is used in medical tracers - injected into the body.
  • A small amount is used though, so it is safer.
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  • It also has a short half life.
  • It is stopped by tick metal.
  • It is also used in medical tracers.
  • Gamma is used in industrial tracers - to detect cracks.
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