Physics Demo Number: 213
Approximate Run Time: 5 min
Faraday Cage
Demo Description
A Faraday cage is constructed out of a cylindrical metal cage with aluminium foil on top. One can use this to block radio signals.
Scientific Principles
Faraday Cage, Electromagnetic Shielding.Equipment
- Faraday Cage (metal cage with aluminium foil covering the top)
- Radio
Equipment Location
- The radio is in [D-2-6]
- The cage is in [B-2-6]
Instructions
The figure shows the Faraday cage and the radio.
Tune the radio to a strong station, and then cover it with the cage to notice a dramatic decline in signal quality.