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Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other??
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iMo:

--- Quote from: electrodacus on June 29, 2022, 11:27:22 pm ---..
This is just plain wrong.
..
Electrical energy can only travel through a conductor. And yes air can become a conductor but not at 20Vdc and 1m distance.

--- End quote ---

"Electrical energy" does not travel through a conductor. In the conductor the E field is almost zero, and the electrons move or drift in the conductor with speeds like a couple of cm in a second..
electrodacus:

--- Quote from: m k on June 30, 2022, 10:38:22 am ---How is flat and solid copper electrical heater reheating its cooled circle?

--- End quote ---

I do not understand the question. Can you elaborate ?
electrodacus:

--- Quote from: imo on June 30, 2022, 11:06:10 am ---"Electrical energy" does not travel through a conductor. In the conductor the E field is almost zero, and the electrons move or drift in the conductor with speeds like a couple of cm in a second..

--- End quote ---

a) Electrical energy is electrical power integrated over time.
b) Electrical power is the product of electrical current and electrical potential.
c) Electrical current is a stream of charged particles so electrons in this case.

All of the above are well agreed facts.

Since you can only have an electrical current in the conductor (copper pipes in Derek's experiment) it means energy travels through wire.
There is no electrical current through air thus no electrical energy can be delivered to Lamp trough that 1m air gap.

The small current that is seen through the lamp in the first few ns after the switch is closed is due to redistribution of charges inside the conductor.
The line capacitance is being charged.
while charging a capacitor energy flows in the capacitor and it is being stored there and it is not flowing through a capacitor. The displacement current is not a real current is imaginary so just a mathematical construct. Maxwell (a mathematician) came up with this before anyone knew such things as electrons exist.

Also individual electrons inside the wire do not travel at those low speeds and those small speeds you mentioned are the average.
So when you connect a wire in parallel with a charge capacitor (basically short circuiting the capacitor)  the electron that enters the wire from the charged plate of the capacitor will not travel much but at the speed of light an electron from the other side of the wire will enter the other plate of the capacitor.
This electron wave travels close to the speed of light through a conductor and while the electron that enters the wire is not the same with the one that enters the wire the energy travels through the wire.

And yes the stream of electrons will create a magnetic field outside the wire but that is conservative (meaning that all that energy you put in to create that magnetic field will be recovered when you disconnect the wire).
bsfeechannel:

--- Quote from: rfeecs on June 29, 2022, 10:14:26 pm ---
--- Quote from: electrodacus on June 28, 2022, 07:58:37 pm ---
--- Quote from: Alex Eisenhut on June 28, 2022, 06:28:48 pm ---
How does an antenna get energy to couple to the receiver?

--- End quote ---

Transmitter antenna is one plate of the capacitor and the receiver is the the other plate of the same capacitor.


--- End quote ---

This is just plain wrong.

Look up near field and far field:
https://en.wikipedia.org/wiki/Near_and_far_field



--- Quote ---Far-field E (electric) and B (magnetic) field strength decreases as the distance from the source increases, resulting in an inverse-square law for the radiated power intensity of electromagnetic radiation. By contrast, near-field E and B strength decrease more rapidly with distance: the radiative field decreases by the inverse-distance squared, the reactive field by an inverse-cube law, resulting in a diminished power in the parts of the electric field by an inverse fourth-power and sixth-power, respectively. The rapid drop in power contained in the near-field ensures that effects due to the near-field essentially vanish a few wavelengths away from the radiating part of the antenna.
--- End quote ---

The field in and around a capacitor is near field.  That's not how energy is coupled from transmitter to receiver.

Based on your previous posts, you don't seem to believe that radio waves are electromagnetic radiation.

--- End quote ---

In the heads of those energy-flows-in-the-wire people, there was no transmission of electromagnetic energy before the invention of the capacitor and the wire.

There should be a law to forbid them from getting near a light switch.
electrodacus:

--- Quote from: bsfeechannel on June 30, 2022, 06:42:41 pm ---In the heads of those energy-flows-in-the-wire people, there was no transmission of electromagnetic energy before the invention of the capacitor and the wire.

There should be a law to forbid them from getting near a light switch.

--- End quote ---

Capacitors existed forever.

Light switches will not have been needed if the electrical energy did not traveled through wire.
Electrical energy also travels through the incandescent lamp filament else the filament could not get to 3000K and emit infrared and some visible light photons.

It is absurd to even think electrical energy does not travel through wires as if that was the case wires will have not been needed. You just point the battery in the direction of the lamp and lamp will be illuminated.
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