| General > General Technical Chat |
| Veritasium "How Electricity Actually Works" |
| << < (10/185) > >> |
| EEVblog:
--- Quote from: rfeecs on April 29, 2022, 04:32:41 pm ---I thought a new thread might be warranted, since the thread on the previous video wandered so off topic into pseudoscience trolling that it is probably being ignored. :rant: --- End quote --- I mostly stopped reading the orignal thread. |
| EEVblog:
--- Quote from: pepsi on May 01, 2022, 04:15:48 am ---Now that I learned from eevblog live stream this morning he consulted Dave and others who are in the YouTube egnineering space I am also dissapointed he wasn't told whats what. --- End quote --- I told him that no matter what he did he wouldn't please everyone or be able cover every aspect of this in the way they want. And he was very close to actually ditching all his work and not doing a follow up video because of this. This video was shot and was supposed to have been released before xmas, and I suspect it might have been my talk with him a few days before xmas that made him delay it for all this time, as I was the last one he talked to I think, and he was quite on the edge about publishing a response. He has an almost hour long video of us discussing it. I think he did a very good job of showing what he wanted to show, which was the traditional physics Maxwell/Poynting approach. Whether or not that's others cup of tea, then well, everyone has a camera and can upload to youtube.... |
| Naej:
In case someone wants to understand how supraconductors work, you have 2 sets of charges acting in parallel: - electrons which flow with some resistance and are modeled with a resistor - Cooper pairs, which can be accelerated at will without any loss, and are modeled with a perfect inductance. It's true up to THz (and up to critical field), and the colder the material the more electrons turn into Cooper pairs. So perfect conductor at DC, extremely good at RF (Q up to 10^10) not so good beyond. |
| electrodacus:
Derek's claim exact quote: "Energy doesn't flow in wires" Proceeds to show a DC circuit where the energy source (a battery) is connected with wires to the load (light bulb). If "energy doesn't flow in wires" why he even needs the wires ? He even shows in his second video examples of inductive chargers ???. These inductive chargers have nothing to do with his main example where wires are used to connect the source to the load. Even during that initial transient the coupling is capacitive not inductive. |
| rfeecs:
--- Quote from: electrodacus on May 01, 2022, 05:53:43 pm ---Derek's claim exact quote: "Energy doesn't flow in wires" Proceeds to show a DC circuit where the energy source (a battery) is connected with wires to the load (light bulb). If "energy doesn't flow in wires" why he even needs the wires ? He even shows in his second video examples of inductive chargers ???. These inductive chargers have nothing to do with his main example where wires are used to connect the source to the load. Even during that initial transient the coupling is capacitive not inductive. --- End quote --- So then how does the energy pass across the empty space between the switch and the lamp in the initial transient few nanoseconds? How does it get from the bottom two wires to the top two wires? "Capacitive coupling" doesn't equate to the energy only flows in wires. |
| Navigation |
| Message Index |
| Next page |
| Previous page |