Re:Universe May Contain “Tardis” Regions Bigger On The Insid...
by fargolime on Tuesday September 10, 2013 @02:12AM
(#6358456)
The network of observers are moving inertially (i.e. unpowered, freely falling), moving with the rocket for only a moment, so they're not accelerating like the rocket is. That's how those observers can make good measurements, in that moment. For more info search for "momentarily comoving inertial frame" at http://math.ucr.edu/home/baez/physics/Relativity/SR/clock.ht.... Each inertial clock can measure the passage of time accurately.
<quote> 2. Herein, as in most relativity texts, we ignore the travel time of light that prevents a remote event from being seen until after it has occurred. In principle a network of observers can be set up in locally inertial frames that momentarily co-move with the rocket, so that events can be detected by equipment right next to them, and the records subsequently compiled and analyzed. </quote>
I could be reading that wrong, but the author seems to be suggesting that time's inherent inconsistency at relativistic speeds and distances can be mitigated with a "network of observers". I don't know if that's true, but "momentarily co-move with the rocket" sounds like it's ignoring an awful lot of relativistic acceleration of the measuring devices.