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| Veritasium "How Electricity Actually Works" |
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| electrodacus:
--- Quote from: T3sl4co1l on May 11, 2022, 08:13:02 am ---:-DD So you're telling me wires are made of shittons of inductors and capacitors, through which the power flows, and that those inductors and capacitors -- you know, the in-circuit manifestations of fields in space -- are somehow hidden away, packed up inside a tiny hunk of metal? Tim --- End quote --- That is exactly right. Also it happens that the simulation using this matches experimental results perfectly. |
| electrodacus:
--- Quote from: EEVblog on May 11, 2022, 11:03:52 am --- For me the question is entirely about DC and energy inside vs outside the wire. Nothing to do with switches, transmission lines, capacitors, inductors, transformer theory, antenna theory etc etc. --- End quote --- Energy flows inside the wire both for AC and DC. The difference is that with DC the energy flow is uniform inside the wire meaning the entire section of the wire is used while with AC the higher the frequency and line capacitance the more charges will flow closer to the surface forming the capacitor. So for a coaxial cable with AC the energy in the shielded conductor flows closer to the outside surface and for the shield it flows more on the surface facing the shielded conductor. In the case of Derek's experiment during the transient energy that is delivered by moving electrons travels in conductor but a bit more electrons are on the side facing the other conductor. But that transient is just a fraction of a second and after that the energy will flow uniformly inside the conductor. It is fairly easy to test by measuring where energy loss in the form of heat is and for DC you will see that the conductor heats uniformly on the entire conductor cross section. |
| electrodacus:
--- Quote from: SandyCox on May 11, 2022, 09:25:21 am ---How does sunlight get to the earth? Do you see wires connected between the sun and the earth? --- End quote --- Sun provides energy to earth through photons with most of the energy delivered in infrared but also what we call visible light and a bit of UV With the photoelectric effect so photons will transfer their energy to electrons. |
| electrodacus:
--- Quote from: snarkysparky on May 11, 2022, 09:55:35 am ---Does electricity flow in air or wires? The correct answer is BOTH.. In the video a transient energy lights the bulb quickly because of fields. But the wires take over, otherwise there could be no light output from a DC source. It seems this whole confusion is cause by the attempt to make it one or the other. --- End quote --- Electric flow is due to electron flow and that happens in wire both for DC and AC/transient. Unless you have electrons flying through the air from one conductor to another electrical energy will not travel through air. And yes there are case like in that electrostatic generator video I posted but there there are very short distances in air and thousand of volts so that electrons are physically traveling through air delivering energy but that is not the case in Derek's experiment with 20V and 1m between conductors. Derek's claim written in the thumbnail of his first video was "energy doesn't flow through wires" one of the most absurd claim I ever heard showing that he has no understanding of what energy means. |
| PlainName:
--- Quote from: electrodacus ---you will see that the conductor heats uniformly on the entire conductor cross section --- End quote --- Easy for you to say. How about you demonstrate that? |
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