[Southack]

General Relativity and Quantum Cosmology, abstract
gr-qc/9706082

From: Bill Walker <walker@ifm.mavt.ethz.ch>
Date: Fri, 27 Jun 1997 16:29:59 +0200   (69kb)
Date (revised): Mon, 28 Jul 1997 20:37:18 +0200

Propagation Speed of Longitudinally Oscillating Gravitational and Electrical Fields

Authors: William D. Walker, J. Dual
Comments: No changes - better PS, 13 pages, PS

The near-field Lienard-Wiechert potential solution of a longitudinally oscillating electrical field produced by an oscillating charge is presented, and the results are compared to the R. P. Feynman multipole far-field solution. The results indicate that the phase speed of a longitudinally oscillating electrical field is much faster than the speed of light in the near field.

[RightWhale]

the phase speed of a longitudinally oscillating electrical field is much faster than the speed of light in the near field

Many people will find phase speed confusing since it has nothing to do with wavefront propagation.

[Physicist]

The results indicate that the phase speed of a longitudinally oscillating electrical field is much faster than the speed of light in the near field.

Homework: understand the difference between "phase velocity" and "group velocity".