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After the nuclear bombing of Hiroshima, people still live there.

  1. Apr 10, 2010 #1
    After the nuclear bombing of Hiroshima, people still live there.

    How long does it take for the radiation to go away?
     
  2. jcsd
  3. Apr 15, 2010 #2
  4. Apr 15, 2010 #3
    Re: Hiroshima

    How long before the started to inhabit the area?
     
  5. Apr 15, 2010 #4

    mgb_phys

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    Re: Hiroshima

    Straight away, radiation is really the least of your problems if somebody detonates a bomb above your head.
    Only about 10-15% of the initial casualties were due to radiation and long term very few - something like a few hundred excess cancer deaths over the last 50years.

    Basically everybody close enough to receive a dangerous radiation dose are killed by the blast or it's immediate results.
     
  6. Apr 15, 2010 #5
    Re: Hiroshima

    That is a legitimate question.
     
  7. Apr 15, 2010 #6

    mgb_phys

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    Re: Hiroshima

    The most dangerous isotope from a Hiroshima type bomb is probably Iodine 131 with a half life of 8days, so after a couple of months it is essentially zero.
    Ceasium 137 with a half life of 30years is also produced but it's not very easily absorbed in the body.
     
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