relativistic motion
08 Apr 2020In what way is the normalisation of the 4-velocity \(\upsilon^\mu\), \(\upsilon_\mu \upsilon^\mu=c^2\) of a massive particle conserved in (i) electrodynamics and in (ii) general relativity?
In what way is the normalisation of the 4-velocity \(\upsilon^\mu\), \(\upsilon_\mu \upsilon^\mu=c^2\) of a massive particle conserved in (i) electrodynamics and in (ii) general relativity?