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Thread: Japan quakes

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  1. 03-15-2011, 03:38 AM #10
    Hornet331
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    Quote Originally Posted by generics_user View Post
    background radiation is around 10-30 cpm (counts per minute) iirc
    Depends on the region, in the usa it can go up to 60 for normal backgorund radiation. But it depends also on with what the geiger counter is calibrated (Co60 or Cs137). For this model its with Co60 and 1mR/hr = 1080 cpm

    So:
    10 cpm = 9.2593 µR/hr = 0.00925 µSv/hr = 9.2593 nSv/hr
    Last edited by Hornet331; 03-15-2011 at 03:51 AM.
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