Re: Faraday Cage

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>

I'll say.  If you're not careful, mu metal will rip your arm off its so
sharp.

Dan



 >
 >          Only a small bit.
 >          Thats why mu metal was invented: 'steel' is not real
 >          effective.  And even mu metal is tricky to work with.
 >
 > >I can understand penetration of a copper wall, due to the copper being
 > >dimagnetic.  That's why the CIA uses both
 >
 > >copper and mu metal walls to keep bugs out.
 >
 >          field strengths are lower.  And Cu is fairly effective
 >          against any HF (say 100KHz and up?  I disrecall?)
 >          mag fields, due to eddy currents.  Or so i recall.
 >
 > >I would think that the magnetic field would tend to follow
 >
 > >the steel mesh, and not radiate much beyond it.
 >          It does, somewhat.  But the effect is not as strong
 >
 >          as the effect of Cu (or other conductor) on
 >          e field.  And either 'steel' or Mu metal can
 >          saturate (Tesla System mag fields, up close,
 >          are STRONG, by some measures.  Once either
 >          saturates, attenuation goes away.
 >
 >
 > --
 >          best
 >          dwp
 >
 > ...the net of a million lies...
 >          Vernor Vinge
 > There are Many Web Sites which Say Many Things.
 >          -me
 >
 >
 >
 >
 >
 >
 >