From the post "We Have A Problem, Coulomb's Law" dated 20 Nov 14,
and from "Wrong, Wrong, Wrong" dated 25 May 15,
The force in the field due to a particle is,
where we have dropped the phase information, .
but , so,
However, cannot be less than zero. So, both and is valid up till .
This is not the inverse square law! And what happens to after ?