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That depends on the wavelength of the radiation.

  • chicken wire can block radiation with a wavelength longer than about 10cm.
  • a metal screen with 2mm holes can block radiation up to microwaves.
  • most solids can block IR and visible light.
  • lead is typically needed to block x-rays.
  • many meters of lead and/or concrete is needed to block gamma rays.
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12y ago
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15y ago

the thing that brocks magnectic waves is skin.

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Q: What materials can block electromagnetic radiation?
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