Le dim. 15 déc. 2024, 00:35, Alan Grayson <[email protected]> a écrit :
> > > On Saturday, December 14, 2024 at 4:12:07 PM UTC-7 Quentin Anciaux wrote: > > > > Le dim. 15 déc. 2024, 00:06, Alan Grayson <[email protected]> a écrit : > > > > On Saturday, December 14, 2024 at 2:32:41 PM UTC-7 Brent Meeker wrote: > > > > > On 12/14/2024 9:34 AM, Alan Grayson wrote: > > Yes. In relativity measurements are generally not frame invariant, > > such as the E and B fields in EM. But this case seems different. > > Imagine two observers, one in car frame and the other in garage frame, > > and they're both viewing the car passing through the garage, now open > > on both ends. Ostensibly, the former sees the car fail to fit in the > > garage, the latter sees the opposite. I don't believe a rigorous > > definition of "fit" will resolve this contradiction. Now I have a > > question for you and Brent concerning his plots. What EXACTLY did his > > plots ostensibly prove? AG > > That an observer sitting at the center of the garage and using mirrors > to simultaneously photograph both ends of the garage will, for a > sufficiently fast car, get photographs showing both ends of the cat in > the garage. > > Brent > > > So, from the pov of the garage, the car fits in the garage; exactly my > claim due to Lorentz contraction of car, from garage frame. I didn't > need a plot to deduce this result. Now, from car's reference frame, > the garage length shrinks due to Lorentz contraction, and for a > sufficiently fast car, it won't fit since the car's length remains the > same in this scenario. Conclusion; the frames disagree on whether > the car fits. Is this a reasonable conclusion, given that the two > observers are viewing the same phenomenon? AG > > > Both observers don't share the same simultaneity plane... > > > Even if true, and I'm not sure exactly what you mean, why does that matter > in the situation I've described? BTW, this is how the problem is usually > "resolved"; by appeals to lack of simultaneity with zero details or > arguments. AG > It's so tiresome, talking to you or cosmin feels the same, a big waste of time. > > -- > 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/a8ff0045-5dde-4bbc-86cb-8de7914a8471n%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/a8ff0045-5dde-4bbc-86cb-8de7914a8471n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAMW2kAr5UCqkMJt9QDG9h9Et_K9LbW2d%3D5p6%2Bs8-%2BU-aButyyw%40mail.gmail.com.
