The Uehling potential is a first-order quantum correction to this law that accounts for vacuum polarization. A variant of this law that predicts an exponentially damped force that is always attractive is said to be a "screened" form of it and is generated by the Yukawa potential. A direct analogue of this result for the case of steady-state currents is the Biot-Savart law. John Robison's discovery of the (*) inverse-square nature of this law was replicated by its namesake using a torsion balance with a metal ball on a silk thread. A constant in it is equal to one over four pi times the permittivity of free space, and 
The Uehling potential is a first-order quantum correction to this law that accounts for vacuum polarization. A variant of this law that predicts an exponentially damped force that is always attractive is said to be a "screened" form of it and is generated by the Yukawa potential. A direct analogue of this result for the case of steady-state currents is the Biot-Savart law. John Robison's discovery of the (*) inverse-square nature of this law was replicated by its namesake using a torsion balance with a metal ball on a silk thread. A constant in it is equal to one over four pi times the permittivity of free space, and the principle of superposition for it equates the net force to the charge times the vector sum of the electric fields. For 10 points, name this law describing the electrostatic interaction of two point charges.
The Uehling potential is a first-order quantum correction to this law that accounts for vacuum polarization.
Coulomb's law