There is a great deal of confusion about Faraday cages. Not only
about how to build them, but also what they actually protect against. In
this article, Dr. Arthur Bradley, author of Disaster Preparedness for
EMP Attacks and Solar Storms, answers a few basic questions and perhaps
debunks a few myths.
What is a Faraday Cage?
A Faraday cage (a.k.a. Faraday shield) is a sealed enclosure that has
an electrically conductive outer layer. It can be in the shape of a
box, cylinder, sphere, or any other closed shape. The enclosure itself
can be conductive, or it can be made of a non-conductive material (such
as cardboard or wood) and then wrapped in a conductive material (such as
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