I've already explained it to you last month, there is no contradiction, just non agreement on simultaneity... from the cars pov, the doors aren't closed simultaneously, that's it.
Le sam. 7 déc. 2024, 11:51, Alan Grayson <[email protected]> a écrit : > > > On Wednesday, December 4, 2024 at 2:41:25 PM UTC-7 Jesse Mazer wrote: > > On Wed, Dec 4, 2024 at 4:06 PM Alan Grayson <[email protected]> wrote: > > In the case of a car whose rest length is greater than the length of the > garage, from pov of the garage, the car *will fit inside* if its speed is > sufficient fast due to length contraction of the car. But from the pov of > the moving car, the length of garage will contract, as close to zero as one > desires as its velocity approaches c, so the car *will NOT fit* *inside* > the garage. Someone posted a link to an article which claimed, without > proof, that this apparent contradiction can be resolved by the fact that > simultaneity is frame dependent. I don't see how disagreements of > simultaneity between frames solves this apparent paradox. AG > > > Can you think of any way to define the meaning of the phrase "fit inside" > other than by saying that the back end of the car is at a position inside > the garage past the entrance "at the same time" as the front end of the car > is at a position inside the garage but hasn't hit the back wall? (or hasn't > passed through the back opening of the garage, if we imagine the garage as > something like a covered bridge that's open on both ends) This way of > defining it obviously depends on simultaneity, so different frames can > disagree about whether there is any moment where such an event on the > worldline of the back of the car is simultaneous with such an event on the > worldline of the front of the car. > > Jesse > > > Are you claiming that the apparent paradox can be resolved by accepting > the fact that the car and garage frames have different conclusions about > whether the car fits in the garage? 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/be649f2f-75d0-4dea-8ae7-07e6b547dc55n%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/be649f2f-75d0-4dea-8ae7-07e6b547dc55n%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/CAMW2kApnaqjU09sEN7pLZs4MaN16aREe-T%3D57O--P1%3Dfjve3Ew%40mail.gmail.com.
