Re: Steel Man of Einstein & Relativity.

Den 09.09.2024 14:13, skrev Richard Hachel:

 As for two things: the curvature of the sun's rays in the perisolar atmosphere, in view of the enormous ejections of matter and gas that we see, is it not precisely due to diffractive effects?

GR predicts that the gravitational deflection of em-radiation
by the Sun, observed from the Earth, is:
    θ = 2GM/(AU⋅c²)⋅(1+cosφ)/sinφ
Where:
  AU= an astronomical unit (distance Sun-Earth)
  φ = angle Sun-Earth as observed from the Earth
  c = speed of light in vacuum
  G = Gravitational constant
  M = solar mass
This equation predicts that when φ is 90⁰, θ = 0.0041".
The beam that hits the Earth will then be 1 AU from
the Sun at it's closest approach to the Sun.
(Like the Earth) Not much gas there, do you think?
These predictions of GR are thoroughly experimentally confirmed:
(even for angles Earth-Sun > 90⁰)
https://paulba.no/paper/PPN_gamma_Hipparcos.pdf
https://paulba.no/paper/PPN_gamma_Cassini.pdf
https://paulba.no/paper/Shapiro_2004.pdf
https://paulba.no/paper/GravDeflection.pdf
https://paulba.no/paper/Fomalont.pdf
https://paulba.no/paper/PPN_gamma_Cassini_2.pdf
You must understand that GR's predictions for gravitational
deflection of em-radiation are so thoroughly confirmed that
there is no room for doubt.
See also:
https://paulba.no/Deflection.html
https://paulba.no/pdf/GravitationalDeflection.pdf

Finally, the precession of Mercury's perihelion... Isn't a simple RR effect possible? Either because time does not pass in the same way (Mercury's faster speed), or because in Mercury's frame of reference, the Sun performs a revolution different from the reciprocal (since the frame of reference is no longer quite the same).

No.
https://paulba.no/PerihelionAdvance.html
https://paulba.no/pdf/GRPerihelionAdvance.pdf
You are trying to "think for yourself" to find naive solutions
to problems physicist have solved and tested experimentally
a long time ago.
Maybe you should read and learn what physicists have written in
stead of claiming that all physicists are idiots and not worth reading?
---
Paul
https://paulba.no/