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

--- Quote from: penfold on February 22, 2022, 10:18:18 am ---
--- Quote from: aetherist on February 22, 2022, 12:29:19 am ---[...]
--- Quote from: penfold on February 21, 2022, 11:38:09 pm ---And you're confident that there's no classical EM explanation for what's contained in those scope traces?
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The old (electron drift inside a wire) electricity can't explain how electricity is so fast along a wire.
And the Poynting Field version can't explain how electricity is slowed by a thin coat of insulation on a wire.[...]
--- End quote ---
Except classical theory does both of those things, as long as they are adequately represented in the analysis. You may very often see that in student exercises and lecture examples that wires are assumed to be free of insulation - otherwise, the amount of algebra would balloon way beyond what might be useful as a worked example. That level of analysis was way beyond the scope of the Veritassium video etc.

Surface finish would be a problem for all materials, I guess maybe you're right in trying to force a defined pattern.
If I were to construct a 1m long coaxial line from M3 brass studding and 15mm copper plumbing pipe: the tube polished inside and out as too would be the threads. If I short one end to the tube and drive the other, I can measure the frequency response. Classical theory would predict some highs and lows to the impedance at well defined frequencies, related to the geometry etc, packing the air-gap with a known insulator would change the response in a predictable way.
For a simple air-gapped line, would you expect there to be a significant change in the resonant frequencies compared with classical predictions?
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Threaded steel rod costs about $1 per ft so $100 for 100 ft. Galvanised might be best. And compare with plain galvanised (another $100 i suppose).
I dont know about frequency stuff. DC would be a must.
Hollow pipe or tube would be interesting but i would put it on the bottom of my list.
I am tempted to fork out say $400 for a 300 MHz scope from china.
I bet Tony Wakefield would loan me his 350 MHz scope but he is over 2 hrs away from me.
daqq:

--- Quote from: aetherist on February 22, 2022, 10:29:32 am ---I am tempted to fork out say $400 for a 300 MHz scope from china.
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Ebay, local forum buy/sell ( https://www.eevblog.com/forum/buysellwanted/ )?
penfold:

--- Quote from: aetherist on February 22, 2022, 01:24:56 am ---[...]
Dont forget light propagates at c throo the aether.
Actually Einstein said that light is slowed by the presence of mass. Which everyone ignores. So, light always propagates at less than c, koz there is nowhere in the universe that is not near mass.
[...]

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When did Einstein say that? Experimental evidence has shown that speed of light is constant with relative distance to massive objects, but time and space dilation happens.
aetherist:

--- Quote from: daqq on February 22, 2022, 10:28:16 am ---If there are no gravity waves, what did LIGO and the other gravitational wave observatories observe and why did it travel seemingly at c?
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I have spent a long time reading about LIGO. Lots of good scientists have written heaps saying that it is rubbish. One thing that LIGO keeps quiet is that their signal depends on the supposed fact that their glass lasers resist length contraction, whereas their mirrors, or i mean the distance tween their hanging mirrors, duznt resist contraction.

Its funny. Weber the pioneer of GW research, who used an aluminium bar for his detector, based his theory on the supposed fact that his bar would not resist length contraction. He wanted a Nobel, but didn’t get one. LIGO, who use an opposite theory, did get a Nobel.
penfold:

--- Quote from: aetherist on February 22, 2022, 10:29:32 am ---Threaded steel rod costs about $1 per ft so $100 for 100 ft. Galvanised might be best. And compare with plain galvanised (another $100 i suppose).
I dont know about frequency stuff. DC would be a must.
Hollow pipe or tube would be interesting but i would put it on the bottom of my list.
I am tempted to fork out say $400 for a 300 MHz scope from china.
I bet Tony Wakefield would loan me his 350 MHz scope but he is over 2 hrs away from me.

--- End quote ---

Making the experiment co-axial would reduce the influence of external 'stuff', equipment wires etc, and provides a well defined ground return path through the outer tube (could go up to 54mm diameter if 15mm is too close) - even better if you can inject and measure signals through the same port. Brass isn't ferro-magnetic and has better defined electrical properties than construction steel, a galv'd finish would be a nightmare for any easily predictable surface finish. A 1m length is far easier to make straight (without insulator supports) by adding a little tension... 100' would be very difficult to set up in a repeatable manner. With a threaded rod forming the middle conductor of a coaxial line we then have an experiment that would be easily analysed from both a classical and 'new' theory.
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