Advanced Studies in Theoretical Physics Vol. 8, 2014, no. 22, 983 - 989 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/astp.2014.48104 The Dirac Equation According to the Virial Theorem for a Poential n kr V  Hasan Arslan Department of Physics, Bingol University, Bingol, Turkey Copyright © 2014 Hasan Arslan. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract The Dirac equation is written for a chosen potential by using the virial theorem. The derived new form of the Dirac equation does not include a potential term. Keywords: Virial Theorem, Dirac Equation, Schrodinger Equation 1. Introduction The application of the virial theorem is done in different fields of science. In this study we apply it to the Dirac equation. The application of the virial theorem to the Dirac equation is done for different purposes as can be search in the references given in this article and in the literature. Previous works are searched. As a result, the virial theorem is applied in a different way to the Dirac equation.The design of the paper is as follows: in section 2, the virial theorem used in quantum mechanics is written; in section 3, the aplication of the virial theorem to the Dirac equation is done; in section 4, the conclusion due the study is given. 2. The Virial Theorem in Quantum Mechanics The time dependent Schrodinger Equation is given by .   H dt d i   (1)