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"Veritasium" (YT) - "The Big Misconception About Electricity" ?

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Sredni:
Ok, let me bring up this argument I put forward a few dozen pages ago (I will simplify it even more):

I have a mass of 1 kg in position P at 0 meters over sea level.
I take this mass 1000 meters away to drop it from a cliff into a hole deep 10 meters.
The potential energy of the mass is converted into kinetic energy and then this is uses to generate heat.  Let's say I 'generated' 1 joule of energy.

Has this energy traveled along the 1000 meters path?

What if I changed my mind and headed in a different direction and after 1000 meters I dropped the mass into a hole twice as deep?
Would the 2 joule energy have traveled instead?

Has energy ever traveled along the path?
How much?
1 joule? 2 joule? 100 joule? m c^2 joule?


Berni:

--- Quote from: TimFox on May 02, 2022, 02:09:31 pm ---A quantitative discussion of the effect of normal insulation layers on velocity factor in antenna construction:
https://lowpowerlab.com/guide/rf-best-practices/velocity-factor/
Summary:
0.95 for bare copper wires
additional factor of 0.95 to 0.98 when adding normal insulating materials (PVC, polyethylene, PTFE)
These factors are important when calculating antenna length.

To get down to 0.66, you need a coaxial construction such as RG-58/U with solid polyethylene dielectric
With RG-62A/U, which has an internal construction which is roughly half air and half polyethylene (annular geometry), the characteristic impedance rises to 93 ohms, and the velocity factor is 0.83.
Foamy dielectrics have similar velocity factors.

--- End quote ---

Yep this is more what i would expect, in the order of single digit percent difference from adding insulation.

For the kind of precision Veritasiums experiment is working with this certainly would not make much of a difference. The experiment works fine and shows expected results. It just doesn't clearly show the 1m/c delay claimed in the original video.

Uttamattamakin:
You know what. 

In looking for some citations on experiments that speak to QED applied to circuits I found out that not only is it a thing esoterically done in say high energy physics experiments.  Circuit Quantum Electrodynamics is a named subfield of both theory and experimentation.  Though the fundamental result that QED of course reproduces everything about classical ED and explains even more, even more powerfully and simply ... it goes beyond it in cool ways.

It turns out to work with Qbits in quantum computers we may need to think about this.
https://rsl.yale.edu/sites/default/files/files/RSL_Theses/jzb_thesis_finaldigital_Aug24.pdf  "Multiquibit experiments in 3D circuit quantum electrodynamcis"  Jacob Blumoff  (A PHD thesis) 

This is so cool.  Check it out.  Like seriously.  I knew in the abstract such things were done, and knew the fundamentals ... but had no idea there was this much to it.   ;D

   "This thesis explores some of the first experiments in 3D cQED to use multiple qubits, both with transmon qubits and qubits encoded in the states of harmonic oscillators. One experiment demonstrates a novel method to use a high-Q resonator to measure a register of transmon qubits in nontrivial ways. We go on to rigorously characterize these measurements."

Just like everywhere replace Qbit with light bulb and there you go.

Veritasium's video almost but does not quite go there. In the part where he shares a speech by the gent who did a lot of fundamental work on semiconductors.  I wonder if he will next speak on this.

What could be a more appropriate device to run a TINY current next to that a superconducting qubit.  Especially since his ideal wires were basically like superconductors according to him. 

Naej:

--- Quote from: bsfeechannel on May 02, 2022, 12:59:43 pm ---
--- Quote from: Naej on May 02, 2022, 09:26:57 am ---I'm not sure what claim it is supposed to save, but these devices illustrate that electrons can push on electrons outside their conductor. To absolutely no one's surprise.

--- End quote ---
Yeah. How do they do that? Do they have little arms to shove their fellow creatures one meter away?

--- Quote ---They do not, in any way, prove that energy resides in the vacuum; and indeed anyone can check that neither you nor Derek gave any proof of this (it does not exist, it cannot exist).
--- End quote ---
How is the energy for the push transferred from one electron to another through the "vacuum" 1 meter away? Do they throw stones at each other?

--- End quote ---
There's nothing more absurd than looking at physics equations and say "how?", it's not a religion, it's an axiom. ::)

--- Quote from: bsfeechannel on May 02, 2022, 12:59:43 pm ---
--- Quote ---It's a win for Maxwell's equations, but if you want to attribute it to Poynting, Plato or Derek, well I'm a bit puzzled but why not.

--- End quote ---
It's a win for nature, that dismantled the wires-are-pipes stupidity.

--- End quote ---
"Natural" antennae dismantled what? You think people who know that wires are pipes never heard of antennae?

bsfeechannel:

--- Quote from: Naej on May 02, 2022, 10:02:47 pm ---There's nothing more absurd than looking at physics equations and say "how?", it's not a religion, it's an axiom. ::)

--- End quote ---

Forget the equations. What I'm talking about is how exactly an electron exerts force on the others 1 m away. Does it have a barge pole to poke their fellow subatomic particles at a distance?


--- Quote ---"Natural" antennae dismantled what? You think people who know that wires are pipes never heard of antennae?

--- End quote ---

It's a win for nature, you know, this material universe which we live in and you cannot fool. Capish? But since you are obsessed with antennas, when exactly a piece of conductor decides it is not a wire anymore and becomes an antenna?

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