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Thread: Can radiation still pass through lead aprons?

  1. #1 Can radiation still pass through lead aprons? 
    Junior Member
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    May 2013
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    At 110Kev they block above 90 percent but I wonder about other lower frequencies specifically microwaves and radio waves?
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  2. #2  
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    Quote Originally Posted by Intropersona View Post
    At 110Kev they block above 90 percent but I wonder about other lower frequencies specifically microwaves and radio waves?
    At that level the problem is adequately modeled using classical electromagnetic theory. You can calculate the power transmitted, reflected and absorbed on the basis of the thickness and conductivity of the material used and the frequency of radiation of interest. Generally speaking a conductive metallic shield will reflect most incoming electromagnetic energy (say 90% or more), but there will be leakage through any openings and around the edges. That is why you are effectively shielded from microwave radiation by the thin metallic construction of a common microwave oven.
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