This is what I think could be happening from the link:
> That is not the case with the telecom tower, or a flashlight, or a laser. In those cases, radiation is directed, not equal in every direction. The inverse square law still applies, but distance is calculated from an apparent source well behind the actual energy source.
> That is not the case with the telecom tower, or a flashlight, or a laser. In those cases, radiation is directed, not equal in every direction. The inverse square law still applies, but distance is calculated from an apparent source well behind the actual energy source.