Special Relativity has a real problem with instantaneous communication, even when it must be possible as in this case.
On Thu, Mar 6, 2014 at 8:54 AM, H Veeder <[email protected]> wrote: > Both frames are in sliding contact so it takes no time for the sprayer to > leave behind a mark. > I suspect there is a (hidden?) assumption in relativity theory that does > not allow for instant communication at the sliding interface between two > frames of reference. > Harry > > > On Wed, Mar 5, 2014 at 10:02 AM, Roarty, Francis X < > [email protected]> wrote: > >> I would think there is a Lorentzian conversion of the paint going from >> a near C frame to a stationary frame.. the tracks will appear further away >> from the under carridge because the train is displaced /shrinking away >> from the axis of spatial displacement at an angle between time and the >> spatial vector. Never able to reach C from our perspective just get smaller >> and "slower" once past 45 degrees. >> >> Fran >> >> >> >> *From:* Eric Walker [mailto:[email protected]] >> *Sent:* Wednesday, March 05, 2014 3:04 AM >> *To:* [email protected] >> *Subject:* EXTERNAL: Re: [Vo]:a length contraction paradox >> >> >> >> On Tue, Mar 4, 2014 at 11:54 PM, H Veeder <[email protected]> wrote: >> >> >> >> Only by changing the thought experiment and incorporating that signal can >> an observer in the rest frame declare the events to be non-synchronous in >> his frame. >> >> >> >> This is an interesting thought experiment. I'm curious how the people at >> physics.stackexchange.com would reply to it. >> >> >> >> Eric >> >> >> > >
