Astrophysics (Index)About

worldline

(world line)
(path of an object through space and time)

A worldline (or world line) is the path of an object through time and space. Ignoring relativistic effects, this corresponds to a function mapping time to position. Given relativity, such a mapping depends upon the frame of reference. A worldline is defined within a 4-dimensional spacetime in which the path through time and space is unique, such that the equivalent line in any frame of reference can be produced through a transformation implied by the relativity theory (there is a transformation associated with special relativity and a more complex one for general relativity). Spacetime diagrams attempt to show some of the characteristics of worldlines.


(physics,relativity)
Further reading:
http://en.wikipedia.org/wiki/World_line

Referenced by pages:
spacetime diagram

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