FARADAY CAGE

BY KARLA, GLORIA AND PAULA RUS

INDEX HISTORY WHAT IS IT? FARADAY'S ICE PAIL EXPERIMENT OPERATION OF THE FARADAY CAGE EXAMPLES POPULAR CULTURE

What is it? Is an enclosure formed by conductive

material.

Used to block electric fields.

Named after the English scientist Michael Faraday, (1836)

HISTORY Michael Faraday observed

that the excess charge on a charged conductor.

To demonstrate this fact, he built a room coated with metal foil and allowed high-voltage discharges from an electrostatic generator to strike the outside of the room.

FARADAY'S ICE PAIL EXPERIMENT

Simple electrostatics experiment .

Demonstrates the effect of electrostatic induction on a conducting container.

Faraday used a metal pail made to hold ice.

OPERATION OF THE FARADAY CAGE

The operation of the Faraday cage is based on the properties of a conductor in electrostatic equilibrium. When the cage is placed in the presence of an external electric field, positive charges remain in the positions network; electrons, however, that in a metal are free, they begin to move because they act on a given force by :

OPERATION OF THE FARADAY CAGE

Where e is the electron charge. As the electron charge is negative, electrons move in opposite to the electric field direction and although the total load of the conductor is zero, one side of the cage (in which electrons are accumulated) remains with excess negatively charged, while the other side is a defect electron (positive charge). This displacement causes loads inside the cage an electric field in the opposite direction to the external field,

As inside the cage no field, no charge can pass through; therefore it is used to protect electrical charges devices. The phenomenon is called electrical screening.

OPERATION OF THE FARADAY CAGE

Many devices we use in our daily lives are equipped with a Faraday cage: microwaves, scanners, cables, etc

Other devices, without being provided with a Faraday cage act as such, like: the elevators, cars, airplanes, etc.

For example for this reason it is recommended to stay inside the car during a lightning storm, its metal body acts as a Faraday cage.

EXAMPLES Analytical chemistry to reduce noise Automobile and airplane passenger compartments A booster bag Elevators The scan room of a MRI Plastic Bags

POPULAR CULTURE

The X-Files (TV series) Better Call Saul (Tv series) Fringe (TV series) Person of Interest (TV series) Enemy of the State (Movie) Transcendence (Movie) The Darkest Hour (Movie) Mr. Robot (TV series) Doctor Who (TV series)

QUESTIONS HOW IT IS CALLED THE FIRST

EXPERIMENT OF ELECTROSTATICS? HOW IS THE PHENOMENON OF

PROTECTING ELECTRICAL CHARGES CALLED?

NAME THREE EXAMPLES OF FARADAY CAGE,