Feynman's different approach to electrodynamics.

De Luca R., Di Mauro M., Esposito S., Naddeo A.

VII - Didattica e storia della fisica
Aula GSSI Ex ISEF - Sala Rossa - Martedì 24 h 09:00 - 12:00
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We discuss an unpublished description of electromagnetism developed by Feynman in the 1960s, which extends a long way towards the derivation of Maxwell's equations with minimal physical assumptions. Homogeneous Maxwell's equations are derived by first introducing electromagnetic potentials in order to write down a relativistic invariant action. In this approach, the Lorentz force exclusively follows from its linearity in the charge velocity and from relativistic invariance. The obvious historical significance of this approach is then complemented by its possible relevance for didactics, providing a novel way to develop the foundations of electromagnetism, which can fruitfully supplement usual treatments.

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