as others have said, you're either absorbing a wave (and blocking someone's signal) or acting as an extra coil (and making the source do extra work). It's perp

as others have said, you're either absorbing a wave (and blocking someone's signal) or acting as an extra coil (and making the source do extra work). It's perpetual motion nonsense to suggest mounting these on roofs to power buildings.. Apparently phys.org is as bad as new scientist!