**Category:**

Research Papers

**Sub-Category:**

Unification Theories

**Date Published:**

December 13, 2013

**Keywords:**

Partial and temporary unified theory of natural science so far, law of gravity, general relativity, variational principle, advance of Mercury’s perihelion

**Abstract:**

According to "partial and temporary unified theory of natural science so far" including all the equations so far related to natural science, two different theories can be applied to jointly solve the same problem. For jointly solving problem of advance of Mercury’s perihelion with law of gravity and general relativity, three methods are presented. First, the advance of planetary perihelion is the combined result of two motions; According to law of gravity, the elliptical motion creates the perihelion, and the solar system’s vortex motion creates the advance of perihelion, while the parameters of advance are given by general relativity. Second, according to law of gravity and general relativity, the improved formula of universal gravitation can be derived; by using this improved formula, the classical mechanics can be used to solve the problem of advance of planetary perihelion and the problem of gravitational deflection of photon orbit around the sun, while these solutions are the same as given by general relativity. Third, according to the variational principle of "partial and temporary unified theory of natural science so far", for problem of advance of Mercury’s perihelion, the optimization method can be used to reach the optimal approximate solution satisfying law of gravity and general relativity simultaneously.

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