50 Now you know what the EAS test on Wednesday is about.....they are testing the kill switch, geolocating everyone (twitter.com) 🤔💭 Theory 😲💡 posted 229 days ago by slevinwind 229 days ago by slevinwind +50 / -0 42 comments share 42 comments share save hide report block hide replies
Maybe. Ideally, the object you need to isolate should be completely surrounded by metal.
If it is not then you also need to take into account the wavelength of the radiation.