22 citations · 25 across the 4 of their papers we have counts for
4 papers · 1 filter
Brownstein's Whole-Partial Derivatives: The Case of the Lorentz Gauge
A. Chubykalo, A. Espinoza, R. Flores-Alvarado
In this brief note we show that the usual Lorentz gauge is not satisfied by the Lienard-Wiechert potentials, then, using Brownstein's concept of "whole-partial" derivatives we intr…
Experimental test of the compatibility of the definitions of the electromagnetic energy density and the Poynting vector
Andrew Chubykalo, Augusto Espinoza, Rumen Tzonchev
It is shown that the generally accepted definition of the Poynting vector and the energy flux vector defined by means of the energy density of the electromagnetic field (Umov vecto…
A Critical Approach to Total and Partial Derivatives
Andrew E. Chubykalo, Rolando Alvarado Flores
In this brief note we critically examine the process of partial and of total differentiation, showing some of the problems that arise when we relate both concepts. A way to solve a…
Question: Negative Group Delays and Action-at-a-Distance
Andrew E. Chubykalo, Valeri V. Dvoeglazov
We comment on the paper by M. W. Mitchell and R. Y. Chiao, ``Causality and negative group delay in a simple bandpass amplifier", Am. J. Phys. 66 (1), 14-19 (1998).