How a Faraday Cage Protects Electronic Devices from an EMP Attack

A Faraday cage is a protective enclosure that can be used to shield electronic devices from electromagnetic fields. Here are some steps you can follow to build a Faraday cage:

1. Gather materials: You will need a non-conductive material such as cardboard, plastic, or wood, as well as a conductive material such as aluminum foil or metal mesh. You will also need scissors, tape, or glue to secure the materials.

2. Cut the non-conductive material to size: Cut the non-conductive material to the size and shape you want for your Faraday cage.

3. Cover the non-conductive material with the conductive material: Use tape or glue to secure the conductive material to the non-conductive material. Make sure the conductive material is completely covered and that there are no gaps.

4. Test the Faraday cage: To test the effectiveness of your Faraday cage, place a small electronic device like a cellphone, inside and try to send a signal to it, phone call or text message. If the device does not receive the signal, the Faraday cage is functioning properly.

5. Secure the Faraday cage: Once you have tested the Faraday cage, secure it with tape or glue to make sure it stays in place.

Following these steps, you can build a Faraday cage to protect your electronic devices from electromagnetic fields.


An electromagnetic pulse (EMP) attack is a high-intensity burst of electromagnetic radiation that can damage or destroy electronic devices. A Faraday cage is designed to protect electronic devices from EMP attacks by acting as a shield.

When an EMP wave passes through a Faraday cage, the conductive material absorbs the electromagnetic energy and spreads it out around the cage, rather than allowing it to pass through to the devices inside. As a result, the electronic devices inside the Faraday cage are protected from the damaging effects of the EMP.

It is important to note that a Faraday cage will only protect electronic devices from an EMP attack if it is properly constructed and sealed. Any gaps in the conductive material or openings in the cage can allow the EMP wave to pass through and potentially damage the devices inside.