Alan JoSpacetime are relative to each other
All matter pass through Surface of spacetime. According to Special Relativity, the equation denotes that all matters’ sum of speed’s square is constant, based on Pythagorean Theorem. It seems like all matters pass through spacetime with speed of light. But the speed is projection to 3d-space dimension and the definition of Velocity has dependency on Time. In the spacetime, the interpretation of this constant implies that the all particles’ shape, or function based on 4 variable for each coordinate is linear. This is the analysis of Relative Mechanics.
Incident should be same for any observation and interaction. The relativity doesn’t have paradox for all coordinate per each particle. That means the spacetime is differently accelerated (bended) for each coordinate and particle.
