DescriptionLight cone ar.svg	Illustration of a light cone, based on Image:Light cone.png
Date	26 August 2015 (translation), 2007-07-23 (upload to Commons)
Source	translated from Light cone.svg
Author	Sakurambo derivative work (translation): Exmak
Permission (Reusing this file)	Public domainPublic domainfalsefalse This work has been released into the public domain by its author, Sakurambo. This applies worldwide. In some countries this may not be legally possible; if so: Sakurambo grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. Category:Self-published work#Light%20cone%20ar.svgCategory:PD-self#Light%20cone%20ar.svg
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The interval AB in the diagram to the right is 'time-like'. I.e. there is a frame of reference in which event A and event B occur at the same location in space, separated only by occurring at different times. If A precedes B in that frame, then A precedes B in all frames. It is hypothetically possible for matter (or information) to travel from A to B, so there can be a causal relationship (with A the cause and B the effect).

The interval AC in the diagram is 'space-like'. I.e. there is a frame of reference in which event A and event C occur simultaneously, separated only in space. However there are also frames in which A precedes C (as shown) and frames in which C precedes A. Barring some way of traveling faster than light, it is not possible for any matter (or information) to travel from A to C or from C to A. Thus there is no causal connection between A and C.

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Original upload log

This image is a derivative work of the following images:

• Light cone.svg licensed with PD-self,
  • 2007-07-23T08:22:05Z Sakurambo~commonswiki 333x515 (7792 bytes) slight alteration
  • 2007-07-23T00:10:24Z Sakurambo~commonswiki 333x515 (7793 bytes) {{Information |Description=Illustration of a [[w:light cone]], based on [[:Image:Light cone.png]] |Source=self-made |Date=2007-07-23 |Author= [[User:Sakurambo|Sakurambo]] }} The interval AB in the diagram to the right is 'ti

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