3 ms·

I really need to get busy building that Faraday cage in the basement.

• ars 12y ago
  I know you are joking, but to take you seriously for a moment, a Faraday cage would not help at all. A Faraday cage only shields against high frequency fields, but a CME is a very low frequency event. You need mu-metal, and huge amounts of it. Plus it would knock out the power grid, so all the gear in your basement wouldn't be all that useful.
  • skaevola 12y ago
    Can you explain the frequency dependence of the Faraday cage? The only time I can think of them being ineffective is against waves which are above the plasma frequency of the metal the cage is made of.
    • ars 12y ago
      If the wavelength of the EMF is larger than the size of the entire cage it will go through the cage like it wasn't there. (Although it would also have a hard time affecting the small items inside.) A Faraday cage also can not shield against a static, or slowly changing magnetic field.