The Faraday Cage Theory is a principle in electromagnetism that states that an enclosed conductive material can block external electric fields and electromagnetic radiation.
A Faraday cage works by using the conductive material to create an electric field that cancels out the external electric field. The charges in the conductive material redistribute themselves to create an opposing field, effectively blocking the external field from entering the cage.
No, a Faraday cage can only block certain types of electromagnetic radiation, specifically those in the radio frequency range. It cannot block other types of radiation such as X-rays or gamma rays.
When electromagnetic waves encounter a Faraday cage, they can either be reflected or transmitted. Reflected waves bounce off the surface of the cage, while transmitted waves pass through the conductive material. The Faraday cage is designed to reflect and absorb as much of the incoming waves as possible to minimize the amount of radiation inside the cage.
Faraday cages have many practical applications, such as in electronic devices to prevent interference and in buildings to protect against lightning strikes. They are also used in sensitive equipment to prevent outside signals from interfering with their operations. Additionally, Faraday cages are used in medical settings to shield patients from electromagnetic radiation during procedures.