On Monday, December 9, 2024 at 2:01:28 PM UTC-7 Brent Meeker wrote:
> > Nothing odd about dilation and contraction when you know its cause. > But what is odd is the fact that each frame sees the result > differently -- that the car fits in one frame, but not in the other -- > and you see nothing odd about that, that there's no objective reality > despite the symmetry. AG The facts are events in spacetime. There's an event F at which the front of the car is even with the exit of the garage and there's an event R at which the rear of the car is even with the entrance to the garage. If R is before F we say the car fitted in the garage. If R is after F we say the car did not fit. But if F and R are spacelike, then there is no fact of the matter about their time order. The time order will depend on the state of motion. Brent Jesse; it's the last two of Brent's sentences that I find ambiguous. What does he mean? I also wonder what happens when we transform in the reverse direction from the pov of simultaneity, from the car frame to the garage frame? TY, 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/dbf7618e-74d6-472d-9116-8197a476ef56n%40googlegroups.com.
