8 citations · 9 across the 6 of their papers we have counts for
7 papers
Helmholtz Theorem and Uniqueness
Oliver Davis Johns
Vector calculus in three dimensions with a Euclidian metric is the lingua franca of classical physics, including classical electrodynamics. This article corrects some long-standing…
Magnetic Charge and Dyality Invariance
Oliver Davis Johns
This paper is a critical study of non-standard Maxwellian electrodynamics. It explores two important topics: the inclusion of both magnetic and electric charge to produce what it c…
Is Electromagnetic Field Momentum Due to the Flow of Field Energy?
Oliver Davis Johns
Conservation laws that are based on the divergence of a second-rank four-tensor are fundamentally different from conservation laws based on the divergence of a four-vector. This ar…
Relativistically Correct Electromagnetic Energy Flow
Oliver Davis Johns
Detailed study of the energy and momentum carried by the electromagnetic field can be a source of clues to possible new physics underlying the Maxwell Equations. But such study has…
A Spherical Version of Feynman's Static Field Momentum Example
Oliver Davis Johns
The Feynman demonstration that electromagnetic field momentum is real-even for static fields-can be made more pedagogically useful by simplifying its geometry. Instead of Feynman's…
Leibniz Equivalence, Newton Equivalence, and Substantivalism
Oliver Davis Johns
Active diffeomorphisms map a differentiable manifold to itself. They transform manifold points and objects without changing the system of local coordinates used to represent those…
Validity of the Einstein Hole Argument
Oliver Davis Johns
Arguing from his "hole" thought experiment, Einstein became convinced that, in cases in which the energy-momentum-tensor source vanishes in a spacetime hole, a solution to his gene…