This study reinterpreted Tesla’s gravity theory by Dirac's vacuum. Most of the mass in the proton is in the form of energy from color charges field. Dirac's vacuum, in which virtual particle-antiparticle pairs are constantly producing and annihilating repeatedly, is polarized by the electric and color charges contained in the masses. Polarization of the virtual particles leads to rigidification of the vacuum, which leads to paralysis of the vacuum’s function of gravity transmission. This paralysis of the vacuum’s function of gravity transmission between the two masses does not allow the gravitational field lines to pass each other, and finally, causes universal gravitation. For the aspherical anisotropic gravitational field, it is found that the symmetry of universal gravity is not maintained, unlike the result obtained by the principle of superposition. This study interprets universal gravitation mechanism by using vacuum polarization.

ABSTRACT
 1. 서 론
 2. 진공분극과 만유인력 메커니즘
  2.1 질량과 진공분극
  2.2 진공분극과 진공의 경직화
  2.3 진공의 경직화와 중력전달 기능마비
  2.4 진공의 경직화와 만유인력
 3. 결 론
 References

• 심충건(Dept. of Computer Applied Mechanical Engineering, Chungbuk Health & Science University.) | Choong-Gun Sim Corresponding Author