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Veritasium -- How Special Relativity Makes Magnets Work.

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aetherist:

--- Quote from: TimFox on April 04, 2022, 09:25:00 pm ---STR and GTR (to use your ugly abbreviations) are not nonsense--they are logically internally compatible theories.
Your attempts to cite evidence that they are not physically correct are not convincing.
As one of many examples, my former employer manufactured devices that accelerated electrons to a kinetic energy between 1 and 25 MeV. which is far above the electron rest mass of 0.511 MeV/c2, and they behaved exactly how the Special Theory of Relativity predicts.
--- End quote ---
I am half ok with electrons being accelerated to almost  c ------  i prefer that the max speed is about  0.71c.
I don’t know what STR predicts re fast moving electrons.
I don’t like the E=mcc stuff. But i suppose that this aint a part of STR.

TimFox:
Perhaps you should read a standard textbook about what Special Relativity predicts about real situations before you claim that it is nonsense, or less polite words that have no place in a technical discussion.

aetherist:

--- Quote from: TimFox on April 04, 2022, 09:40:49 pm ---So, the demonstrated fact that the electron accelerators I mentioned behave according to Einstein's 1905 paper in Annalen der Physik "On the electrodynamics of moving bodies" (English title) is due to other people, including Frau Einstein and Mr Minkowski?  Does that change physical reality?
--- End quote ---
I don’t know what behaviour that is. But i would ask does that behaviour accord with other relativity theorys, eg Voigt, Cohn (after which Einstein name her paper), Poincare, Lorentz, Larmor

aetherist:
https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.205.4405&rep=rep1&type=pdf
Is magnetic field due to an electric current a relativistic effect? Oleg D Jefimenko

Abstract. Several authors have asserted that the magnetic field due to an electric current is a relativistic effect. This assertion is based on the fact that if one assumes that the interaction between electric charges is entirely due to the electric field, then the relativistic force transformation equations make it imperative that a second field—the magnetic field—is present when the charges are moving. However, as is shown in this paper, if one assumes that the interaction between moving electric charges is entirely due to the magnetic field, then the same relativistic force transformation equations make it imperative that a second field—this time the electric field—is also present. Therefore, since it is impossible to interpret both the electric and the magnetic field as relativistic effects, one must conclude that neither field is a relativistic effect. The true meaning of the calculations demonstrating the alleged relativistic nature of the magnetic field and of the calculations presented in this paper is, therefore, that the idea of a single force field, be it magnetic or electric, is incompatible with the relativity theory.

penfold:

--- Quote from: aetherist on April 04, 2022, 09:25:35 pm ---[...]
Old (electron) electricity fails to explain how electricity propagates at the speed of light c/1 along a wire. Bearing in mind that the speed of em radiation in Cu is 10 m/s DC, & less if AC.
And, old (electron) electricity fails to explain how drifting electrons inside a wire know that the wire has an insulation coating, ie the drifting electrons decide to propagate the electricity at 2c/3 instead of c/1.

--- End quote ---

You're going to need to produce formal proof that classical theory doesn't explain the speed of electricity along a wire... because it does... it travels at a rate that is dependent on the EM properties of the wire and surroundings... is a non-issue for classical theory.
The speed of EM fields inside a wire isn't important because the fields can travel externally to the wire and the electrons inside respond.
Old electricity explains the propagation speed of the "velocity wavefront" or "current density wavefront" that exists in response to the external fields. The presence of insulation slows the external fields to an extent that depends on their thickness and characteristics, some fields travel external to the insulation. Your theory does not explain how an air gap between conductor and insulation can also affect the speed of electrons.


--- Quote from: aetherist on April 04, 2022, 09:25:35 pm ---[...]
So that is why i discovered my new (electon) electricity, ie electricity is in the photons hugging the wire.
This must rate as the best scientific discovery of 2021. And more.

--- End quote ---

It's neither scientific nor a discovery.

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