Why is the signal shielded when the mobile phone is placed in the iron box? Does the electromagnetic wave need an electric field to propagate?
Jammer-MartNovember 2022
Because iron is a metal that can reflect wireless signals, placing a mobile phone in an iron box is equivalent to a wifi jammer. Under certain conditions, the mobile phone signal can be weakened, but complete shielding is impossible.
Because iron is a metal that can reflect wireless signals, placing a mobile phone in an iron box is equivalent to a wifi jammer. Under certain conditions, the mobile phone signal can be weakened, but complete shielding is impossible.