Physics, Relativity, Muon, Quantum Physics, Particle Physics.
receiver. The origins of time and distance of the stationary frame (receiver) are also considered coinciding with those of the moving frame (source) at start. In the stationary frame (receiver), after a time equal to 𝑡𝑟, the wave would have moved by a distance equal to 𝜆𝑟 towards the receiver and