The Study of Absoluteness Overlooked by Special Relativity

This study has reinterpreted the relativity of the laws of physics, an axiom of the special theory of relativity. Einstein interpreted that the relativity of the laws of physics is established due to the relativity of the inertial system. However, he did not consider that relativity was established despite the absoluteness of the inertial system being established. In this paper, we have assumed that relativity holds despite the absoluteness of the inertial system. This perspective is called observer relativity and is used distinguish it from the relativity of the inertial system. Relativity between the observers is expressed using the Lorentz and inverse transform since lights are used by the observers in both cases. To prove the absoluteness of the inertial system, a rigid ruler and light are used. If the observers measure the length with a rigid ruler and light, the reference system is consistent but the system of motion is different. This is defined as the absoluteness of the inertial system. To prove this absoluteness, several experiments were conducted to measure the electrostatic force between two electric charges fixed at the same distance. If the isotropy of space is satisfied, a stationary system can be defined. Conversely, it is defined as a constant velocity system. In the inertial system, the relativity between observers and absoluteness of the inertial system coexist.