Seonglae ChoThe principle of Lorentz invariance states that the laws of physics do not change for all observers.
This is an extension of the classical Galilean principle of relativity, based on the fact that the speed of light is the same for all observers. Lorentz invariance is a core principle of the theory of special relativity, explaining phenomena such as the relativity of time and space, time dilation, and length contraction.