Very often the principles of faraday cage are extended to non electrostatic situations, i.e. situations involving time varying electric and magnetic fields. This means that the interiors of a metallic shell should be impervious to external time varying electric and magnetic fields.
However, I have found quite a few times that my cell phone has worked while in a metallic elevator, even though the signal strength becomes low. Can anyone explain this?
(When I wrap it in an aluminium foil however, I find that it is not able to receive calls.)
However, I have found quite a few times that my cell phone has worked while in a metallic elevator, even though the signal strength becomes low. Can anyone explain this?
(When I wrap it in an aluminium foil however, I find that it is not able to receive calls.)