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The source and sink phenomenological description of charge - how realistic is it? It isn't realistic at all. To be perfectly honest it's totally misleading. I've heard over and over an electron described as a source of the electric field, but that is a misleading term. Yes it is, because like Timaeus said, it's the electromagnetic field. See ...


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There is a grand tradition in electromagnetism to talk about the electric fields using the same terminology as we use for velocity fields. For instance we talk about the flux which rightly is a flow per area (and sometimes we multiply by the area and still call it a flux, which is even more confusing to call two things a flux) but it isn't a flow because it ...


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Virtual particles are not real. A virtual particle is essentially defined by being associated to a propagator. It is, formally, nothing more than such a propagator. The idea of "virtual particle" doesn't even exist before you notice that you can draw pretty Feynman diagrams as a succinct representation of the way QFT amplitudes are calculated. This is ...


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Do anodes emit virtual photons representing their positive electrostatic potential? No. Virtual photons aren't real photons. There's this lie-to-children popscience myth that they're short-lived real photons that pop into existence like magic, but they aren't. They are abstract things used in QED to model interactions. If you think about an electron and ...


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There exist two frameworks in which to look at how fields and interactions appear: a) when talking of elementary particles and their interactions it is the quantum mechanical framework; this is the underlying framework from which emerges b) the classical mechanics and electrodynamics framework. The classical emerges smoothly in a computable way. An ...



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