Recent content by Andrea Panza

Hi Peter, I think Quantum23 might refer to this article: https://www.nature.com/articles/s41598-019-48018-2

Hi PeroK, Thank you very much for the explanation!

Hi Peter, thank you for your reply. I did not explain myself properly in the original post: my issue was that matter coming together in a compact enough region is necessarily traveling below c, while radiation coming together in a given region is traveling at c. My initial thought was that...

Hi, Thanks for the reply. If I got correctly what you are saying is that in the case of parallel photon pairs the contributions to the mass cancel out. Does this mean that in theory, we could have an infinite amount of photon pairs traveling through a vacuum tube carrying an infinite amount of...

I have a question regarding Kugelblitz black holes. I know that they are purely theoretical, and I am perfectly fine with the matter-energy equivalence so I have no problem in assuming that concentrating a sufficient amount of energy in a certain radius might generate an event horizon. However...

I would like to know if any of the contributors to this post is aware of the recent developments posted by Wolfram as bulletins in the last couple of months about the emergence of general relativity and the recapitulation of QM phenomena https://www.wolframphysics.org/bulletins/ My level of...

This might be relevant: the authors demonstrated peculiar life-like behavior in particle cellular automata ruled by a simple motion equation

Hi, As black hole horizon radius grows linearly with the mass, a black hole with mass M1 will have a radius R1,a black hole with twice that mass ( M2=2M1) will have an horizon with twice the radius R2=2R1. For the two horizons to touch (not even to intersect, just to be tangent) the center of...

In my understanding the individual event horizons cannot cross but instead they recede from each other, but if the black holes are close enough they will be surrounded by a bigger horizon given by both masses (so an external observer will see a merge)

Hi, My understanding of physics it is probably not deep enough to fully appreciate all this thread, but I think the link below of 'cell emergence' from a simple rule might be relevant for the discussion. This is the link to the Nature paper: https://www.nature.com/articles/srep37969 Regards

As others already pointed out, is not that easy to determine if something is infinite for real or just way bigger than the detection limit of your tools: If I draw some circles on a piece of paper and I ask you to calculate the curvature (or at least find the approximate center) the task is not...

Hi Jinsuk, I am afraid that we cannot really answer to your question "What happens to the light that arrives at the end of space", because it is made with the incorrect assumption that the universe has a boundary (an edge of some sort), but our current understanding suggests that the universe...

I always thought that two event horizons cannot rally cross and black holes don't merge, but get wrapped in a bigger horizon that encloses them both

Thank you for your answers, but... ehm... I'm not sure I got them right. I was considering an inertial system where all the acceleration to bring the particle at .99 c ends at t0 when the photon is emitted. If my detector is at x=1, at t=1 (in my frame of reference which is stationary with the...

Hi everyone, First of all thank you for all the amazing amounts of information on this forum! I have a very stupid question, which is probably due to a deep misunderstanding about space quantization. I was wandering why the fact that no mass could move at the speed of light is not per se a...