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Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other??
electrodacus:
--- Quote from: aetherist on June 27, 2022, 11:09:05 pm ---Sredni Naej electrodacus & Everybody & Co.
What is a wire that has zero resistance?
What is a wire that is a perfect conductor?
What is a wire that is a superconductor?
What are the differences?
Here my meaning is what are the critical electrical properties.
The answers or definitions might i suppose be of an entirely or partly gedanken nature.
This would be in the context of Lewin's gedanken, & praps Veritasium's gedanken – ie short & sweet & simple.
I have given this some thort over the past 6 months.
A warning -- "O, that way madness lies; let me shun that; No more of that”
--- End quote ---
You look more like a philosopher so people ignores your comments and likely find them annoying.
The superconductor discussion is irrelevant and sort of a side discussion.
Main claim made by Derek (Veritasium) and discussed here is if electrical energy travels outside of wires as he claims or inside the wire as all evidence is pointing to.
The wires, incandescent lamp or a resistor are all the same thing and that will be a an electrical conductor.
Even air is an electrical conductor but is so bad that we do not consider that as a conductor but an electrical insulator.
Electron flow (electrical current) is inside the wire not outside the wire in Derek simple low voltage experiment thus since electrical power is product of electrical current and electrical potential the power flows inside the wire.
Even a small gap of a few mm between the switch contacts will interrupt the flow of electrical current and thus the flow of electrical power.
No need for any quantum mechanics just need to acknowledge the existence of electrons as charged particles and that electrical current is a stream of charged particles.
Alex Eisenhut:
So does my radio still work?
aetherist:
--- Quote from: Alex Eisenhut on June 28, 2022, 03:21:44 am ---So does my radio still work?
--- End quote ---
Yes.
But the electricity is different to what u were taught.
And the radio waves are different to what u were taught.
Otherwise nothing to see here.
electrodacus:
--- Quote from: Alex Eisenhut on June 28, 2022, 03:21:44 am ---So does my radio still work?
--- End quote ---
I do not know about your radio :). But radios obviously work.
Derek setup in the first few nanoseconds also works the same way.
The wires on each side of the lamp act as a receiver antenna. Those two capacitors are being charged by the battery during initial transient and after that since this is DC there is no more variable electric field but energy is delivered from battery to the lamp through wires.
Even if you replace the battery with an AC source all energy travels through wires.
If you charge a bit of plastic and wave that in the air you are also transmitting a signal a you have a variable electric field or you can wave a permanent magnet tho that will have a lower range.
Maybe due to the fact that Derek's circuit is symmetric is confusing so you can think of it as the circuit is long only in one direction while the other is directly connected with just 1m of wire.
Now the long side can be to the Moon and back and say you forgot to connected on the Moon then all you have is a very long capacitor.
When you close the switch that is next to battery all you do is start charging this long capacitor through a lamp (1KOhm resistor) so of course there will be a current through the switch for some ms as you charge the capacitor (not very efficiency as is in series with the lamp).
If you connect the wires on the Moon it will still start the same way as if it was a long capacitor but after electron wave had the time to travel through the long wire the current through the resistor will be larger and no energy is being stored anymore so all energy exiting the battery ends up on the resistor assuming transmission line has no resistance or negligible.
You can not consider a capacitor as a resistor as energy is not lost as heat but being stored that is why I say energy flows in to a capacitor while it is being charged and not through a capacitor.
hamster_nz:
Snice this thread is a about electrons (charges) pushing each other, I've been wondering....
Ignoring other forces (like gravity and magnetism), if we have a stationary electron between two copper places, with 100V across them, the negative charge of the electron will be attracted to the + plate, and repelled by the - plate. I'm pretty sure we all agree to that.
What happens if we put that electron inside a small paper box (but still between the two plates) - does it still feel the same forces? (I think yes). Does the paper box feel any force? (I think no).
What happens if we put the electron inside a small copper box - does it still feel the same forces? (I think no) Does the copper box feel any force? (I think yes). So if the copper box was able to move it would move while the electron inside the box stays still, as it has no forces acting on it.
What does @electrodacus and @aetherist think?
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