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Stated differently, why does EM radiation not "ripple inwards" and collect at some point? These are perfectly possible, by time-reversal. Well, in most cases observed or measured, EM radiation do …

The Larmor formula for energy flow away from the particle is derived based on some assumptions, one of which is that field of the accelerated particle is given by the retarded solution to Maxwell's eq …

The argument about collapse of the atom in Rutherford's model is originally, I think, due to Niels Bohr. It is, originally, not "rigorous", if that word means a mathematical proof. Bohr's himself for …

Why are the electromagnetic modes considered "degrees of freedom" if their existence is conditioned to the motion of the electrons? You assume that EM waves are determined by the motion of the ele …

John Lighton Synge had similar idea and he analyzed numerically the equations of motions for two oppositely charged particles of arbitrary masses where only retarded EM forces are present. J. L. Syng …

This argument shows that "turning off" the shielding effect without work expenditure is not consistent with the "there is no free lunch" idea (there may be one lunch, but not arbitrary number repeatab …

This is quite a subtle issue. The charges in the medium produce secondary spherical expanding EM waves when hit by the primary wave (external forces). There is immense number of these secondary waves. …

Charged particle is accompanied with EM radiation (has field that falls with distance as $1/r$) when it moves with acceleration. This can be shown to be a consequence of Maxwell's equations, well-veri …

1.If the incoming E-M wave can induce a voltage won't it accelerate or decelerate the electrons in the wire and doesn't this acceleration cause further radiation (lets call it secondary radiation) of …

Electromagnetic field is an entity that pervades all space. It may be constant in time, or change in time. When this entity changes in time in a wavelike manner (for example, there is a field pattern …

Accelerating charge produces propagating EM field pattern in space whose intensity falls off with distance as function $1/r$. This field behaves as a wave in the sense it obeys the wave equation (any …

The Larmor formula derivation does not assume circular motion, it can hold for any accelerated motion. The major assumptions in its derivation are: that the field around the particle by which we judge …

Dielectrics are lossy too. And wires are good enough already. Indeed, it is possible to transport energy via dielectric, e.g. using light in optical fibers. But there is still some energy loss due to …

Black body radiation Originally, radiation coming out of a black body - an hypothetical body that absorbs all radiation that comes its way, reflects nothing, and radiates its own radiation. When this …

I'm reading articles about black body radiation and why classical mechanics fails to explain it. More correctly, people could not explain it with classical physics (pre 20-th century physics). N …