Faraday Cages

[Canadian Army]

With all of this Talk about EMP, I thought something should be said about Faraday Cages.

A Faraday cage is an enclosure formed by conducting material; or by a mesh of such material; to block out external static electrical fields. Faraday cages are named after physicist Michael Faraday. For more information on how Faraday cages work you can go to http://en.wikipedia.org/wiki/Faraday_cage. Below are just a few examples of Faraday cages:

Faraday Boxes: A Faraday boxes are a metal box designed to divert and soak up the EMP, by having the object inside the box is insulated from the inside surface of the box.

Homemade Faraday Boxes
The only two requirements for Homemade Faraday Boxes are:
1. The equipment inside the box does not touch the metal container (plastic, wadded paper, or cardboard can all be used to insulate it from the metal)
2. The metal shield is continuous without any gaps between pieces or extra-large holes in it.
Many containers are suitable for make-shift Faraday boxes: cake boxes, ammunition containers, metal filing cabinets, etc., etc., can all be used. Faraday Boxes can also be made of wire screen, any porous metal or by simply using the cardboard packing box lined aluminium foil.

Faraday Blankets: The Faraday Blanket are for larger items which cannot be boxed, such as living room TV sets, etc. The Blanket is basicly a Mylar space blanket with a piece of 6mm black plastic sheet, leaving a 2” edge of black plastic showing all around the blanket. The blanket can be draped over any object.

Faraday Cage: A Faraday Cage is a room lined with copper or aluminium foil, with the floor covered with a false floor of wood or with heavy carpeting to insulate everything and everyone inside from the shield (and EMP). The door is also covered with foil and electrically connected to the shield with a wire and screws or some similar set up.