Relativity, Physics, Math, Einstein, Spacetime.
relative to the system K’ will be represented by the analogous formula 𝑥′ − 𝑐𝑡′ = 0 . . . (2) Those space-time points (events) which satisfy (1) must also satisfy (2). Obviously this will be the case when the relation (𝑥′ − 𝑐𝑡′) = 𝜆 (𝑥 − 𝑐𝑡). . . .(3) is fulfilled in general, where 𝜆 indicates a