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by jacquesm
1053 days ago
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I really hate to start quoting basic wikipedia articles but I have some other stuff to do and I don't want to leave this dangling, from: https://en.wikipedia.org/wiki/Electric_field This is the second sentence in that article: "Electric fields originate from electric charges and time-varying electric currents." > I keep bringing the circuit theory in because it is the reason why people can't believe how electricity actually works. Circuit theory is simply a very useful approximation and how 'electricity actually works' is highly counter intuitive because for starters we got the flow of electrons wrong (they flow from - to + and not the other way around). Still, conceptually, everybody that does electronics for a living will model the flow from + to - because of convenience. But strictly speaking that's not how it 'really works'. But nobody cares they just have a job to do and the tools that suffice for that are the tools that will be used. Finally: the QM reconciliation of EM and Gravity is for now an unsolved problem so there is a fair chance that in the long run you'll be able to make the argument that 'EM is not really how it works'. But for now it's good enough. |
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