Feynman’s different approach to electromagnetism

@article{DeLuca2019FeynmansD,
  title={Feynman’s
 different
 approach to electromagnetism},
  author={Roberto De Luca and Marco Di Mauro and Salvatore Esposito and Adele Naddeo},
  journal={European Journal of Physics},
  year={2019}
}
We discuss a previously unpublished description of electromagnetism developed by Richard P. Feynman in the 1960s. Though similar to the existing approaches deriving electromagnetism from special relativity, the present one extends a long way towards the derivation of Maxwell's equations with minimal physical assumptions (in particular, without postulating Coulomb's law). Homogeneous Maxwell's equations are, indeed, derived by following a route different to the standard one, i.e. first… 
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