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Sagittarius A*

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bsfeechannel:
It is sad to see the EEVBlog forum being transformed into a soapbox for anti-scientific ideas.

aetherist:
4.4. GRMHD Model Theory Metrics We compute the polarimetric observables (|m|net, |v|net, 〈|m|〉, β2) described in Section 2.3 from model images blurred with a circular Gaussian kernel with a FWHM of 20 μas in order to compare them to the ranges measured from EHT and ALMA-only data. Both 〈|m|〉 and β2 depend on the resolution and hence the size of the Gaussian blurring kernel. The value of β2 also depends on the choice of the image center. We do not shift the library images before computing βm coefficients for comparison with the range inferred from the EHT image reconstructions, which have been centered by aligning them to the centered, fiducial total intensity images in EHTC IV. As discussed in Palumbo et al. (2020), a centering offset u expressed as a fraction of the diameter of a PWP m = 2 ring causes a quadratic falloff in β2 power as δβ2/|β2| ≈ 4u2 . Effects on the β2 phase enter at similar order. In the case of the EHT image, u is likely less than one-fifth, meaning that centering errors in β2 will be sub-dominant to other uncertainties, such as the choice of the blurring kernel or the variation across methods and days.

https://discovery.ucl.ac.uk/id/eprint/10125786/1/Akiyama_2021_ApJL_910_L13.pdf

Cerebus:

--- Quote from: aetherist on May 15, 2022, 02:55:15 pm ---In my previous reply i mentioned the problem of the speed of electricity on a wire due to temperature.
In other threads on this forum i have advised that the speed of electricity along a wire will be affected by the aetherwind, which blows south to north through Earth at  500 km/s (which is c/600).

--- End quote ---

Can this aetherwind be blocked or deflected by a suitably shaped metallic membrane? Perhaps a foil of aluminium in the form of a chapeau?

aetherist:

--- Quote from: Cerebus on May 15, 2022, 11:57:01 pm ---
--- Quote from: aetherist on May 15, 2022, 02:55:15 pm ---In my previous reply i mentioned the problem of the speed of electricity on a wire due to temperature.
In other threads on this forum i have advised that the speed of electricity along a wire will be affected by the aetherwind, which blows south to north through Earth at  500 km/s (which is c/600).
--- End quote ---
Can this aetherwind be blocked or deflected by a suitably shaped metallic membrane? Perhaps a foil of aluminium in the form of a chapeau?
--- End quote ---
In the oldendays they thort that the stationary aether could be dragged or partially dragged by moving objects.
Modern aether theory reckons that a uniform speed differential will not drag aether, but that aether is dragged by non-uniform motion, ie by acceleration.
And that the drag duznt depend on the element (eg Al), it just depends on the mass (& praps on the size of the acceleration).
And modern aether theory reckons that the background aetherwind blows through Earth approx south to north at 500 km/s.

My own version of aether theory says that a spinning body expels aether at the poles (ie at the axis), which creates an axial outflow of aetherwind. Podkletnov found this effect. So too Depalma.  I call it the centrifuging of aether, a kind of artificial gravity praps. I don’t know how strong this effect is. But if a spinning disc was suitably placed & suitably aligned then it could partially block or deflect or add to the local aetherwind.
I don’t know why anyone would want to do this.

A supermassive spinning body would suck aether in at equator, & spit aether out at the 2 poles.
This would create or add to jets emitted at the poles.
Now where have i seen such jets ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

raptor1956:

--- Quote from: Cerebus on May 15, 2022, 11:57:01 pm ---
--- Quote from: aetherist on May 15, 2022, 02:55:15 pm ---In my previous reply i mentioned the problem of the speed of electricity on a wire due to temperature.
In other threads on this forum i have advised that the speed of electricity along a wire will be affected by the aetherwind, which blows south to north through Earth at  500 km/s (which is c/600).

--- End quote ---

Can this aetherwind be blocked or deflected by a suitably shaped metallic membrane? Perhaps a foil of aluminium in the form of a chapeau?

--- End quote ---

I think the approach France took during the Revolution was more effective than an aluminum foil chapeau, the Guillotine proved 100% effective!

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