Can Faraday cages tame Wi-Fi?
Say you wanted to protect your Wi-Fi network from surrounding buildings. The most obvious way to do this would be to secure the devices on your network using the wireless security protocol of choice. A very effective, but more extreme, way to do this would be to secure the building itself by making it act as a Faraday cage, shielding the radio frequency waves used by Wi-Fi. Making a large building into a Faraday cage involves encasing the building in a thin layer of conductive material or metal mesh. In physics, a Faraday cage or Faraday shield – named for the British physicist Michael Faraday, who discovered the phenomenon in the 19th century and built the first iteration in 1836 – is an ingenious application of Gauss’ law. Gauss’ Law establishes the relation between electric flux flowing out of a closed surface and the electrical charge enclosed inside the surface. Basically, in a hollow object that can conduct electricity, such as an aluminum sphere, charge will (ideally) distribute
