Ahh ok, now THAT makes sense and tells me a lot + gives me some
keywords to follow up on. Thank you very much!
On Sat, Feb 20, 2016 at 8:27 PM, kmec@... [hp_agilent_equipment]
<hp_agilent_equipment@...> wrote:
The skin depth for copper at 60 Hz is large enough that significant field energy can penetrate through material thin enough to be practical, resulting in interference. Mu metal (iron that has been annealed (degaussed) in a reducing atmosphere, usually hydrogen)) acts to divert magnetic field lines around the shielded object without add any remanent field of its own. I am sure others can/will add more.
73
Jeff Kruth
WA3ZKR
