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It is not difficult to demonstrate that it is impossible to reconcile these conditions with a Newtonian mechanics, in which the coordinates are formed in a three-dimensional space. In SRT, each object moving in its own inertial frame has its own time, which constitutes a fourth coordinate describing its state.  

It is not difficult to demonstrate that it is impossible to reconcile these conditions with a Newtonian mechanics, in which the coordinates are formed in a three-dimensional space. In SRT, each object moving in its own inertial frame has its own time, which constitutes a fourth coordinate describing its state.  

The three most prominent SRT effects are time dilation, length contraction and the equivalence of mass and energy.

The three most prominent SRT effects are [[time dilation]], length contraction and the equivalence of mass and energy.

== Four Vectors and relativistic metric ==

== Four Vectors and relativistic metric ==