External Exposure

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  • External radiation comes from outside our bodies.


  • It can be natural radiation, such as cosmic rays from the sun, or naturally occurring material emitted from our surroundings, such as K-40 found in all living creatures.


  • It can be from sources we are exposed to in our work, such as x-rays or beta particles from P-32.


  • We learn from experience and training how to best reduce our exposure to radiation.


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