Relativity, Physics, Math, Einstein, Spacetime.
— — — — — — — — — — — — — — Observations: The set of Equations (5) make statements about motion of a light signal, as observed from the two frames K and K’. Now, let us examine the statement “For the origin of K’ we have permanently x’ = 0”. It may be recollected that 𝑥′ is the distance travelled