Recent content by robphy

https://skepticalinquirer.org/2020/11/100-authors-against-einstein-a-look-in-the-rearview-mirror/

Possibly interesting reading: https://www.amazon.com/One-Hundred-Authors-Against-Einstein/dp/B09PHH7KC8?tag=pfamazon01-20

This could be a useful assignment to identify where Dingle went wrong.

Since Megadeth is on its farewell tour, this recent interview might be of interest in this thread... https://loudwire.com/dave-mustaine-influenced-every-big-4-thrash-band/ ENTREVISTA - DAVE MUSTAINE (MEGADETH) ( &t=5m50s talks about the Big 4 and Big 8 of Thrash Metal ) and here is my...

That is the full prompt to GeminiPro that preceded the output I presented (as low-res captures). That prompt came after a sequence of prompts: The first attempt was "Translate to English, together with typeset equations, into a pdf." which was good... but only produced 4 pages, but did not...

I subscribe to Gemini Pro. What I had posted in my reply is what I had tried, Here are low-resolution images of some of the output.

Try google gemini.... with "Translate to English, together with typeset equations, into a pdf." but you'll probably have to break up the document into chunks.... e.g., i want a line by line translation of the introduction and section 1 , including typeset equations, maintaining the rough page...

Here's an ancient thread with more references https://www.physicsforums.com/threads/the-twin-paradox-revisited-a-local-case-study.51197/

The underlying manifold of special relativity is ##R^4##. Flatness is not enough.

Voice of Baceprot (V.O.B.) (2026) This Indonesian Metal Band Is Changing Everything Loud Society and Voice of Baceprot - more V.O.B on PF

I didn’t catch that myself until I read her Wikipedia page. My subset comment was about the links to the two Wikipedia pages I posted.

Some history behind the Perimeter Institute for Theoretical Physics in Waterloo, Ontario. (I visited PI when it was just the brownstone on King and Dupont (Google Maps) [in the video at &t=2m21s] to visit my advisor who was spending a sabbatical there. I've never been to the current site (Google...

https://en.wikipedia.org/wiki/Category:Danish_women_scientists https://en.wikipedia.org/wiki/Category:Danish_scientists Although these probably need some editing.... because currently ##\nsubseteq##

https://en.wikipedia.org/wiki/Carl_H._Brans https://cas.loyno.edu/news/mar-04-2026_carl-henry-brans-longtime-member-department-physics-passed-away-february-26-2026 Carl Henry Brans, longtime member of the Department of Physics, passed away on February 26, 2026, at the age of 90 loynocas -...

Instead of initial and final, it might be better to use event-labels: at event A, at time ##t_A##, the position is ##x_A##, and the velocity is ##v_A##, and the acceleration is ##a_A##. Encourage good bookkeeping, especially for multi-stage processes, like your posed problem.