RE: faraday cage questions (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Sat, 30 Dec 2006 07:15:52 -0800 (PST)
From: davep@xxxxxxxx
To: hvlist@xxxxxxxxxx
Subject: RE: faraday cage questions (fwd)


> Actually, depending on what you're shielding for (e.g. magnetic
> fields), steel might actually work better.
    This gets tricky/subtle:
     For shielding against AC (RF....) mag fields, copper is fine:
     The 'shielding' is due to induced, out of phase, currents,
     which cancel the applied field.

     Does nae work for DC, or real well, for LF AC.

     cf any text on chamber/shielding design.

     best
      dwp