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What difference is between Beta particle and negative charges?

  1. Nov 1, 2011 #1
    "Beta particles are high-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei such as potassium-40. The beta particles emitted are a form of ionizing radiation also known as beta rays. "

    Negative charges also contain electrons, Beta particle are high-energy, high-speed electrons.
    What make beta particle harmful to human? will high-speed electrons be the main cause?
    Does anyone have any suggestions?
    Thanks in advance for any suggestions
  2. jcsd
  3. Nov 1, 2011 #2
    Just a question, but are you just trying to get people to do your homework for you?
  4. Nov 1, 2011 #3
    Beta particles are electrons, they're just electrons that originate from nuclear reactions, decays, etc., so we call them beta particles instead.
  5. Nov 1, 2011 #4

    I like Serena

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    They're like a lot of high speed bullets fired at your body.
    Except that they don't leave wounds, and you can't see them, but they damage the body at a sub-cellular level.
  6. Nov 1, 2011 #5
    Thanks everyone very much for suggestions
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