2022/09/13 by Congjun Wu, Wu, Congjun
Physics and Astronomy · Engineering · #Experimental and Theoretical Physics Studies #Geophysics and Sensor Technology #Quantum and Classical Electrodynamics
paper · pdf · doi:10.48550/arxiv.2209.07466
We derive the relativistic velocity addition law, the transformations of electromagnetic fields and space-time intervals by examining the drift velocities in a crossed electromagnetic field configuration. The postulate of the light velocity invariance is not taken as a priori, but is derived as the universal upper limit of physical drift velocities. The key is that a physical drift of either an electric charge or a magnetic charge remains a drift motion by inertial reference frame transformations. Such a simple fact is incompatible with the Galilean velocity addition. This derivation provides a way to introduce relativity via elementary electromagnetism.