2 ms·
This discussion seems to revolve around Veritasium's video explaining how elecitricty doesn't quite flow inside of power lines. I can't help but feel that "ele
by contravariant 5y ago
This discussion seems to revolve around Veritasium's video explaining how elecitricty doesn't quite flow inside of power lines.
I can't help but feel that "electricity doesn't travel along the wires" is a somewhat unhelpful "well, actually" explanation that kind of misses the point. And you can tell it misses the point because you can't actually carry electricity without free electrons.
And at least in part the confusion seems to focus itself around the concept of stray capacitance, which makes it doubly confusing when you illustrate it with circuit diagrams where stray capacitance is deliberately left out. See also ElectroBOOM's rebuttal [1] where he illustrates how the situation can be explained by explicitly drawing in the stray capacitance.
[1]: https://www.youtube.com/watch?v=iph500cPK28 https://www.youtube.com/watch?v=iph500cPK28
- YetAnotherNick 5y agoThis guy performed the same experiment using a km long wire and measured the voltage in oscilloscope. https://www.youtube.com/watch?v=2Vrhk5OjBP8 https://www.youtube.com/watch?v=2Vrhk5OjBP8
- raverbashing 5y agoYes, and guess what? The bulk of the electricity takes the roundtrip time to start to flow "Oh but what about that tiny bit!" That's capacitance. Sending "electricity" through air is not new, it's called Radio.