Abstract
The fact that the energy density ρg of a static spherically symmetric gravitational field acts as a source of gravity, gives us a harmonic function\(f\left( \varphi \right) = e^{\varphi /c^2 } \), which is determined by the nonlinear differential equation
Furthermore, we formulate the infinitesimal time-interval between a couple of events measured by two different inertial observers, one in a position with potential φ-i.e., dt φ and the other in a position with potential φ=0-i.e., dt 0, as
When the principle of equivalence is satisfied, we obtain the well-known effect of time dilatation.
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Dionysiou, D.D. Nonlinear newtonian theory and the effect of time dilatation. Astrophys Space Sci 104, 389–397 (1984). https://doi.org/10.1007/BF00650311
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DOI: https://doi.org/10.1007/BF00650311