Additions and Corrections to ELECTRICITY and MAGNETISM by Oleg D. Jefimenko Page 96, Fig. Add d<
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From Wikipedia, the free encyclopedia. GriffithsMark A.
Charge density and current density are creating them both. Therefore, we must conclude that an electromagnetic field is a dual entity always having an electric and a magnetic component simultaneously created by their common sources: Hence, it is impossible for E and B fields to be “creating” each other.
However, Jefimenko’s equations show an alternative point of view.
Jefimenko’s equations – Wikipedia
Views Read Edit View history. Jefimenko, Solutions of Maxwell’s equations for electric and magnetic fields electtricity arbitrary mediaAmerican Journal of Physics 60 10— McDonald, The relation between expressions for time-dependent electromagnetic fields given by Jefimenko and by Panofsky and PhillipsAmerican Journal of Physics 65 11 Covariant formulation Electromagnetic tensor stress—energy tensor Four-current Electromagnetic four-potential.
In electromagnetismJefimenko’s equations named after Oleg D.
There are similar expressions for D and H. There is a widespread interpretation of Maxwell’s equations indicating that spatially varying electric and magnetic fields can cause each other to change in time, thus giving rise to a propagating electromagnetic wave  electromagnetism. Jefimenko give the electric field and magnetic field due to a distribution of electric charges and electric elextricity in space, that takes into account the propagation delay retarded time of the fields due to the finite speed of light and relativistic effects.
They are the general solutions to Maxwell’s equations for any arbitrary distribution of charges and currents. As pointed out by McDonald,  Jefimenko’s equations jefimebko to appear first in in the second edition of Panofsky and Phillips’s classic textbook. In other words, the left side of each equation is actually “caused” by the right side, unlike the normal differential expressions for Maxwell’s equations where both sides take place simultaneously.
This page was last edited on 16 Marchat Retrieved from ” https: Therefore they can be used for moving charges and currents. The electric field is written in a slightly different – but completely equivalent – form. Essential features of these equations are easily observed which is that the right hand sides involve “retarded” time jrfimenko reflects the “causality” of the expressions.
JefimenkoCausality Electromagnetic Induction and Gravitation2nd ed.: Electromagnetic tensor stress—energy tensor. These equations are the time-dependent generalization of Coulomb’s law and the Biot—Savart law to electrodynamicswhich were originally true only for electrostatic and magnefism fields, and steady currents.