Roberto Pavani's latest activity

Thank you, but I think the argument is being missed. The point is not about the gravitational effect of one bucket on the other; it's...

Good question. The key difference is: When we observe stars rotating from Earth, we know it's a coordinate effect — we can detect...

Watching a YouTube video about Newton's rotating bucket vs Mach's principle, a simple variant came to mind that I haven't seen...

Excellent observation. This alone would deserve a dedicated thread (Abraham–Lorentz, radiation reaction, and the energy-balance puzzle...

I think you could benefit of reading "§ 1. Die Keplersche Ellipse in der Relativitatatheorie." as a initiation to alpha, and then the...

Linking the question of Pavani with mine, the point is that here there is a fine thread for Mathematics that somehow is not fully...

Noted. My posts in this thread discuss the isoclinic decomposition of SO(4) and its relation to closure conditions, standard...

Understood, thanks for the heads-up. To be clear: I have not linked or referenced any personal work in this thread. The question is...

There is an interesting similarity with magnetic force. The magnetic force on a point charge is orthogonal to its 3-velocity, so it does...

Thank you for the correction — you're right that the Brannen phase for charged leptons is 2/9 radians (no π), not π/12. I was imprecise...

Fair point on terminology; "tidal effects" is more precise than "tidal forces". Thanks for the clarification.

I've been looking at the geometric origin of the phase ##\delta = \pi/12## (15°) that appears in the Koide parametrization for charged...

I agree that in GR free-falling particles follow geodesics and experience no force by definition. My point was simpler (for...

Consider a cloud of non-interacting dust particles in free fall near a black hole: no electric forces at all, yet the cloud stretches...

Any force is fictitious if, locally and for a point-like object, you can find a reference frame where it vanishes. Gravity satisfies...