On Wednesday, October 1, 2025 at 7:20:13 AM UTC-6 John Clark wrote:
On Wed, Oct 1, 2025 at 8:29 AM Alan Grayson <[email protected]> wrote: *> Have physicists in the last 120 years claimed that two paths of different lengths in spacetime which start and end at same events, have the same accelerations, except Brent in his diagram? AG* *In a word, yes. Two worldlines between the same events in spacetime can have different lengths even if both involve acceleration. And proper time is the length of your world line. But of course if they have identical acceleration histories then they are in the same worldline, not a different one.* You're writing nonsense. Brent has two worldlines with different lengths, claiming they have identical accelerations. AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/everything-list/30d2cf3c-8ddd-48c2-9a91-4d548d9fc04cn%40googlegroups.com.
