Illustrating Einstein's Special Relativity: A relativistic diagram that displays in true values the components of a four vector

Abstract

After having shown that the corresponding components of a four vector transform viathe same transformation factors as the space-time coordinates of the same event do, we design a relativistic diagram that displays in true values theirs components. One diagram works for events generated by tardyons whereas a second diagram works for events generated by light signals or photons. We consider both approaching and receding