On Mon, Jun 29, 2015 at 10:09 AM, James Bowery <[email protected]> wrote:

And from the abstract for "Measuring Propagation Speed of Coulomb Fields
> <http://arxiv.org/abs/1211.2913>":
>
> As a matter of fact the LiƩnard-Weichert retarded potential leads to a
> formula indistinguishable from the one obtained assuming that the electric
> field propagates with *infinite velocity*.
>
>
I think Bob had in mind the addition of an electron to a semiconductor
material.  I was thinking about the addition of energy to the existing
electrons (e.g., by the absorption of a photon) and the propagation of the
new average energy, which might or might not be considered the propagation
of an electric field.  Is this latter case covered by the empirical finding
above?

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