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 < francis.x.roa...@lmco.com> 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:eric.wal...@gmail.com] > *Sent:* Wednesday, March 05, 2014 3:04 AM > *To:* vortex-l@eskimo.com > *Subject:* EXTERNAL: Re: [Vo]:a length contraction paradox > > > > On Tue, Mar 4, 2014 at 11:54 PM, H Veeder <hveeder...@gmail.com> 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 > > >
