You see, the dielectric constant of this material isn't constant at all.
The coefficient K is called the dielectric constant of the medium, and its value is taken as unity for air.
Numerically the specific inductive capacity of a dielectric is equal to the dielectric constant already mentioned.
From Walden's work it appears that the dielectric constant finally determines the quantitative ionizing effect of a solvent.
For constant charges and distances the mechanical force is inversely as the dielectric constant.
The value of the dielectric constant is greatly affected by the temperature and the frequency of the applied electric force.