On Sun, Dec 22, 2013 at 02:24:04PM -0500, Edgar Owen wrote: > All, > > The proof is simply the fact that the time traveling twins meet up again with > different clock times, but always in the exact same present moment. This > proves beyond any doubt there are two kinds of time, clock time which varies > by relativistic observer, and the time of the present moment (what I call > P-time) which is absolute and common to all observers across the universe. >
Of course there are two times here. The two observers in question start and arrive at the same spacetime coordinates, which is conventionally called "coordinate time". However, due to acceleration of one of the twins, their proper times differ. What you call "clock time" appears to be what is usally called "proper time", and what you call "P-time" is usually called "coordinate time". What you call "present moment" appears to be what is conventionally called "event" - namely a single 4D spacetime point. It is not the same as the usual "present moment" concept of a space-like slice, which cannot be unambiguously defined. I'm not convinced there is anything new here... -- ---------------------------------------------------------------------------- Prof Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Professor of Mathematics hpco...@hpcoders.com.au University of New South Wales http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
