On Tue, Dec 17, 2024 at 8:57 PM Alan Grayson <[email protected]> wrote:
> I
>
> On Tuesday, December 17, 2024 at 2:33:46 PM UTC-7 Brent Meeker wrote:
>
> On 12/17/2024 9:25 AM, Alan Grayson wrote:
>
>
>
> > Using Brent's initial condiitons, in the rest frame the lengths of the
> > car and garage are 12' and 10' respectively. There's no controversy
> > that the car doesn't fit because it's longer. Now set the car in
> > motion and use the gamma factor in SR,
>
>
> You must be miscalculating the factor sqrt{1-v^2} is less than one, so
> the moving car is shorter.
>
>
> *Yes. I should have used its inverse, so a moving car is shorter from the *
> *garage frame. My general point is that the results can be obtained
> without*
> *applying simultaneity*
>
>
Only if you ignore the whole pedagogical point of the example which I
pointed to in my comment earlier today, namely how both frame's
perspectives make sense without implying a true physical contradiction
(i.e. contradictory predictions about local events).
Jesse
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