3 papers
physics.class-ph2026
Infinite self energy?
Jerrold Franklin
The notion of an infinite electromagnetic self energy of point charges (presumably electrons) is accepted by many electromagnetic textbooks. See, for instance,\cite{jdj,dg,rf}. How…
physics.class-ph2025
Comment on "Magnetic moments in the Poynting theorem, Maxwell equations, Dirac equation, and QED"
Jerrold Franklin
The paper ``Magnetic moments in the Poynting theorem, Maxwell equations, Dirac equation, and QED", arXiv:2501.02022, by Peter J. Mohr, purports to show that Maxwell's equation, $\m…
physics.class-ph2025
Legendre polynomial expansion of the potential of a uniformly charged disk
Jerrold Franklin
We use a Legendre polynomial expansion to find the electrostatic potential of a uniformly charged disk. We then use the potential to find the electric field of the disk.