Demonstrate that the quantity \( E^{2}-p^{2} c^{2} \) for a particle is an invariant, i.e., it h... VIDEO
Demonstrate that the quantity \( E^{2}-p^{2} c^{2} \) for a particle is an invariant, i.e., it has the same magnitude in all inertial reference frames. What is the magnitude of this invariant?
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