• CanadaPlus@lemmy.sdf.org
    link
    fedilink
    English
    arrow-up
    3
    ·
    edit-2
    7 months ago

    Yep. It’s called near field and far field in radio. In the far field you can approximate it as a beam from the transmitter, while in near field it’s magnets and things can absolutely interact. You never want to put up a stand-alone antenna in the near field of something conductive. Those big tower antennas actually incorporate the ground as a critical part of their design, because of that and the non-negligible conductivity of ground water.