This quantity is the overall constant multiplying every component of a tensor denoted P that may be simplified by the Kleinman symmetry condition. Alpha is set equal to 3 over N times a rational function of two forms of this quantity in the Clausius–Mossotti formula. Electric susceptibility is one less than a form of this quantity that is also known as the dielectric constant. Multiplying this quantity by the area of two plates over the distance between them yields (*) capacitance. This quantity is the constant of proportionality between the E and D fields, and divides the enclosed charge to produce electric flux in Gauss’s law. In c·g·s units, this quantity for a vacuum equals one over four pi, which sets Coulomb’s constant equal to one. For 10 points, name this electric analog of permeability, denoted epsilon. ■END■
ANSWER: electric permittivity [or absolute permittivity; accept dielectric constant or permittivity of free space or permittivity of the vacuum or relative permittivity; prompt on epsilon-naught until read]
<JC, Physics>
= Average correct buzz position