I have difficulty to find any example of observable concept / element of a theory. All examples that come to mind seem to be rather non-observable. Help.
@Commander
I see you often post puzzles and I hope you are good in solving them as well. I am still looking for a better solution for this one:
If you can help with it or have questions about it, please post in that thread.
Thanks.
I thought that this is what you mean. It is a common effect for sure, but it is also individual. In my case and in case of several people I know, it does not work, by choice.
I don't think you need an equation for this. If you convert the entire mass to something massless, like e.g., light, then that something moves with the speed of light. Regardless of the initial mass.
Ah, I didn't realize that you refer to that post...
No, the barrier is independent of the frame. In any frame, the faster you move the more difficult it is to add speed.
It is quite possible that there were on this planet, more intelligent and less aggressive Homo species, but they went extinct, perhaps with our help.
Then we are not.
I've looked through the paper. It appears that the "space-river model" is not, and it does not intend to be an interpretation of GR. It rather
It applies only to a limited set of reference frames / observers, in a limited set of space-time geometries, e.g.,
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