Redirected from World line
Therefore synonymous with, or an abstraction of, observer.
Instructions on commensurate relations between worldlines or their members, and results of their evaluations, are collectively referred to as Physics.
An alternatively weaker notion of worldline, [1] (http://216.239.33.100/search?q=cache:TUFFVOJm1hgC:library.thinkquest.org/27930/worldlines.htm+worldlines&hl=en&ie=UTF-8), has been suggested.
wikipedia.org dumped 2003-03-17 with terodump