How Things Work: The Faraday Cage

A Faraday Cage is created by encapsulating a space with conductive material. The material shape can be anything from a chain link fence to a fine metallic mesh to a solid, continuous surface. Faraday Cages distribute the charges and radiation around the exterior of the cage’s conducting material. The external electric field causes electrostatic induction in the conducting material, ultimately canceling out the field inside the conductor. The effectiveness of blocking electromagnetic radiation is controlled by the construction, hole size, material, etc. Faraday Cages are used on airplanes, microwaves, MRI machines, private rooms, EMP protection, and many other areas of our lives.

Jarrett Linowes
Mechanical Engineer
omniamfg@gmail.com

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