Ah. I think we're parsing nextaccountic's ambiguous grammar differently. My reading: "Can magnetic fields be shielded (by mu-metal), like a Faraday cage shield

Ah. I think we're parsing nextaccountic's ambiguous grammar differently. My reading: "Can magnetic fields be shielded (by mu-metal), like a Faraday cage shields electric fields?" vs your reading: "Can a Farafay cage shield magnetic fields like it can shield electric fields?"