Statement of the problem : I copy and paste the clip from the text, underling in red the sentences where, in my opinion, the author(s) have gone wrong. I annonate to the right of the text in blue, assuming they are both readable. The text in question is titled Special and General Relativity (2026, Springer) by Boblest, Muller and Wunner.
I don't explain further, except for one point.
It is reported that R##\ddot{\text o}##mer found a time lag ##\Delta t = 22\;\text{minutes}\,## between...