How does aluminium foil help in hiding metal from a metal detector?
aluminiumsheet > 03-23-2018, 06:50 AM
By forming a Faraday cage around what's inside and the detector see only the "cage" of aluminium foil. The explanation is the same for every metal, not only aluminium. But keep in mind that the "blinding" method depends of some things e.g. the frequency of the detector, energy, form of the detector coil.