Recently, the author, in terms of his 5D fully covariant theory of gravitation, has quantitatively determined the dielectric constant of the polarized vacuum in accordance with the charge-mass ratio of a charged object [14].

The answer as shown in the next section is positive when the charge-mass ratio of the charged body is much greater than 1.

5] V, we can also calculate the charge Q and charge-mass ratio a of the sphere as Q = 4[pi][[epsilon].

c] - E)/E versus the radial distance r for a charged object with mass of 1000-kg and charge-mass ratio [alpha] = 0, 1, 10, 100, 1000, respectively.