Michael Faraday invented the Faraday Cages
in 1836. A Faraday Cage is an enclosure
formed by conducting materials that
prevent outside both static and non-static
electric fields.
Faraday Cages can be used to protect
electronic devices from electrostatic
discharges. They are not as strong as
Earth’s magnetic field, but they can
shield the interior from electromagnetic
radiation originating from the outside.
Faraday found that the conductor charge
had no effect on anything that was
contained within. It turned out that the
charge remained only on the exterior.
Faraday built a room covered in metal foil
and then used an electrostatic generator
to produce high-voltage discharges that
trickled on the outside of his room. He
could not find any electric charge on the
inside surfaces. |
